Scholars@Duke
Roberto Cabeza

Roberto Cabeza

Professor of Psychology and Neuroscience
Psychology & Neuroscience
cabeza@duke.edu
Duke Box 90999, Durham, NC 27708-0999
B243F LSRC Bldg, Ctr Cognitive Neuroscience, Duke Univ, Durham, NC 27708

Selected Publications

The neural basis of the insight memory advantage.

Journal Article Trends in cognitive sciences · March 2025 Creative problem solving and memory are inherently intertwined: memory accesses existing knowledge while creativity enhances it. Recent studies show that insights often accompanying creative solutions enhance long-term memory. This insight memory advantage ... Full text Cite

Subsequent Memory Effects in Cortical Pattern Similarity Differ by Semantic Class.

Journal Article J Cogn Neurosci · January 2, 2025 Although living and nonliving stimuli are known to rely on distinct brain regions during perception, it is largely unknown if their episodic memory encoding mechanisms differ as well. To investigate this issue, we asked participants to encode object pictur ... Full text Link to item Cite

Surprise!-Clarifying the link between insight and prediction error.

Journal Article Psychonomic bulletin & review · December 2024 The AHA experience, a moment of deep understanding during insightful problem-solving involving feelings of certainty, pleasure, and surprise, has captivated psychologists for more than a century. Recently, a new theoretical framework has proposed a link be ... Full text Cite

Clinical Manifestations

Journal Article Alzheimer's & dementia : the journal of the Alzheimer's Association · December 1, 2024 BACKGROUND: Alzheimer's Disease (AD) is characterized by progressive impairment of cognition and memory, including the loss of episodic memory. The use of non-invasive brain stimulation therapies to modulate memory encoding processes is a promising avenue ... Full text Cite

Differential Mnemonic Contributions of Cortical Representations during Encoding and Retrieval.

Journal Article J Cogn Neurosci · October 1, 2024 Several recent fMRI studies of episodic and working memory representations converge on the finding that visual information is most strongly represented in occipito-temporal cortex during the encoding phase but in parietal regions during the retrieval phase ... Full text Open Access Link to item Cite

Connectivity analyses for task-based fMRI.

Journal Article Phys Life Rev · July 2024 Functional connectivity is conventionally defined by measuring the similarity between brain signals from two regions. The technique has become widely adopted in the analysis of functional magnetic resonance imaging (fMRI) data, where it has provided cognit ... Full text Link to item Cite

Beyond Basic Tuning: Exploring Discrepancies in User and Setup Calibration for Gaze Estimation

Conference Eye Tracking Research and Applications Symposium (ETRA) · June 4, 2024 Calibrating gaze estimation models is crucial to maximize the effectiveness of these systems, although its implementation also poses challenges related to usability. Therefore, the simplification of this process is key. In this work, we dissect the impact ... Full text Cite

Visual Recognition Memory of Scenes Is Driven by Categorical, Not Sensory, Visual Representations.

Journal Article J Neurosci · May 22, 2024 When we perceive a scene, our brain processes various types of visual information simultaneously, ranging from sensory features, such as line orientations and colors, to categorical features, such as objects and their arrangements. Whereas the role of sens ... Full text Link to item Cite

Prediction error minimization as a common computational principle for curiosity and creativity.

Journal Article The Behavioral and brain sciences · May 2024 We propose expanding the authors' shared novelty-seeking basis for creativity and curiosity by emphasizing an underlying computational principle: Minimizing prediction errors (mismatch between predictions and incoming data). Curiosity is tied to the antici ... Full text Cite

Hippocampal Functions Modulate Transfer-Appropriate Cortical Representations Supporting Subsequent Memory.

Journal Article J Neurosci · January 3, 2024 The hippocampus plays a central role as a coordinate system or index of information stored in neocortical loci. Nonetheless, it remains unclear how hippocampal processes integrate with cortical information to facilitate successful memory encoding. Thus, th ... Full text Link to item Cite

Endel Tulving (1927-2023).

Journal Article Science (New York, N.Y.) · December 2023 Explorer, innovator, and theorist of human memory. ... Full text Cite

Effects of Aging on Successful Object Encoding: Enhanced Semantic Representations Compensate for Impaired Visual Representations.

Journal Article The Journal of neuroscience : the official journal of the Society for Neuroscience · November 2023 Although episodic memory and visual processing decline substantially with healthy aging, semantic knowledge is generally spared. There is evidence that older adults' spared semantic knowledge can support episodic memory. Here, we used functional magnetic r ... Full text Cite

The influence of insight on risky decision making and nucleus accumbens activation.

Journal Article Scientific reports · October 2023 During insightful problem solving, the solution appears unexpectedly and is accompanied by the feeling of an AHA!. Research suggests that this affective component of insight can have consequences beyond the solution itself by motivating future behavior, su ... Full text Cite

Neural retrieval processes occur more rapidly for visual mental images that were previously encoded with high-vividness.

Journal Article Cereb Cortex · September 26, 2023 Visual mental imagery refers to our ability to experience visual images in the absence of sensory stimulation. Studies have shown that visual mental imagery can improve episodic memory. However, we have limited understanding of the neural mechanisms underl ... Full text Link to item Cite

Calibration free eye tracking solution for mobile and embedded devices

Conference Eye Tracking Research and Applications Symposium (ETRA) · May 30, 2023 In this study we propose a competent low-cost eye tracking solution that is able to run on any mobile device, independently of the hardware that is equipped with. The rapid evolution of technologies has enabled to work with many neural network structures t ... Full text Cite

A framework for concepts of reserve and resilience in aging.

Journal Article Neurobiology of aging · April 2023 The study of factors, across species, that allow some individuals to age more successfully than others has important implications for individual wellbeing as well as health education, policy and intervention. Design of studies and communication across inve ... Full text Cite

The influence of imagery vividness and internally-directed attention on the neural mechanisms underlying the encoding of visual mental images into episodic memory.

Journal Article Cereb Cortex · March 10, 2023 Attention can be directed externally toward sensory information or internally toward self-generated information. Using electroencephalography (EEG), we investigated the attentional processes underlying the formation and encoding of self-generated mental im ... Full text Link to item Cite

Assessing creativity independently of language: A language-independent remote associate task (LI-RAT).

Journal Article Behavior research methods · January 2023 Most creativity measures are either complex or language-dependent, hindering cross-cultural creativity assessment. We have therefore developed and tested a simple, language-independent insight task based on pictures in the style of the widely used verbal r ... Full text Cite

A COGNITIVE NEUROSCIENCE PERSPECTIVE ON INSIGHT AS A MEMORY PROCESS: Searching for the Solution

Chapter · January 1, 2023 What are the cognitive and brain processes that lead to an insight? In this chapter, we will describe the insight-solution process from a neurocognitive perspective. Inspired by cognitive theories, we translate some of insight’s main cognitive subprocesses ... Full text Cite

A functional neuroimaging investigation of Moral Foundations Theory.

Journal Article Social neuroscience · December 2022 Moral Foundations Theory (MFT) posits that the human mind contains modules (or "foundations") that are functionally specialized to moralize unique dimensions of the social world: Authority, Loyalty, Purity, Harm, Fairness, and Liberty. Despite this strong ... Full text Cite

Between automatic and control processes: How relationships between problem elements interact to facilitate or impede insight.

Journal Article Mem Cognit · November 2022 Solving a problem requires relating the pieces of information available to each other and to the solution. We investigated how the strength of these relationships determines the likelihood of solving insight tasks based on remote associates. In these tasks ... Full text Link to item Cite

Neural Mechanisms of Perceiving and Subsequently Recollecting Emotional Facial Expressions in Young and Older Adults.

Journal Article Journal of cognitive neuroscience · June 2022 It is known that emotional facial expressions modulate the perception and subsequent recollection of faces and that aging alters these modulatory effects. Yet, the underlying neural mechanisms are not well understood, and they were the focus of the current ... Full text Cite

Network-based rTMS to modulate working memory: The difficult choice of effective parameters for online interventions.

Journal Article Brain Behav · November 2021 BACKGROUND: Online repetitive transcranialmagnetic stimulation (rTMS) has been shown to modulate working memory (WM) performance in a site-specific manner, with behavioral improvements due to stimulation of the dorsolateral prefrontal cortex (DLPFC), and i ... Full text Link to item Cite

Age-related dedifferentiation and hyperdifferentiation of perceptual and mnemonic representations.

Journal Article Neurobiology of aging · October 2021 Preliminary evidence indicates that occipito-temporal activation patterns for different visual stimuli are less distinct in older (OAs) than younger (YAs) adults, suggesting a dedifferentiation of visual representations with aging. Yet, it is unclear if th ... Full text Cite

Imagining a Personalized Scenario Selectively Increases Perceived Risk of Viral Transmission for Older Adults.

Journal Article Nat Aging · August 2021 The COVID-19 pandemic has created a serious and prolonged public-health emergency. Older adults have been at substantially greater risk of hospitalization, ICU admission, and death due to COVID-19; as of February 2021, over 81% of COVID-19-related deaths i ... Full text Link to item Cite

Memory and Counterfactual Simulations for Past Wrongdoings Foster Moral Learning and Improvement.

Journal Article Cognitive science · June 2021 In four studies, we investigated the role of remembering, reflecting on, and mutating personal past moral transgressions to learn from those moral mistakes and to form intentions for moral improvement. Participants reported having ruminated on their past w ... Full text Cite

The visual and semantic features that predict object memory: Concept property norms for 1,000 object images.

Journal Article Mem Cognit · May 2021 Humans have a remarkable fidelity for visual long-term memory, and yet the composition of these memories is a longstanding debate in cognitive psychology. While much of the work on long-term memory has focused on processes associated with successful encodi ... Full text Link to item Cite

Linking the Rapid Cascade of Visuo-Attentional Processes to Successful Memory Encoding.

Journal Article Cereb Cortex · March 5, 2021 While it is broadly accepted that attention modulates memory, the contribution of specific rapid attentional processes to successful encoding is largely unknown. To investigate this issue, we leveraged the high temporal resolution of electroencephalographi ... Full text Link to item Cite

Age-Related Compensatory Reconfiguration of PFC Connections during Episodic Memory Retrieval.

Journal Article Cereb Cortex · January 5, 2021 During demanding cognitive tasks, older adults (OAs) frequently show greater prefrontal cortex (PFC) activity than younger adults (YAs). This age-related increase in PFC activity is often associated with enhanced cognitive performance, suggesting functiona ... Full text Link to item Cite

Visual and Semantic Representations Predict Subsequent Memory in Perceptual and Conceptual Memory Tests.

Journal Article Cereb Cortex · January 5, 2021 It is generally assumed that the encoding of a single event generates multiple memory representations, which contribute differently to subsequent episodic memory. We used functional magnetic resonance imaging (fMRI) and representational similarity analysis ... Full text Link to item Cite

Synthetic Gaze Data Augmentation for Improved User Calibration

Conference Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) · January 1, 2021 In this paper, we focus on the calibration possibilitiesó of a deep learning based gaze estimation process applying transfer learning, comparing its performance when using a general dataset versus when using a gaze specific dataset in the pretrained model. ... Full text Cite

Intensity- and timing-dependent modulation of motion perception with transcranial magnetic stimulation of visual cortex.

Journal Article Neuropsychologia · October 2020 Despite the widespread use of transcranial magnetic stimulation (TMS) in research and clinical care, the dose-response relations and neurophysiological correlates of modulatory effects remain relatively unexplored. To fill this gap, we studied modulation o ... Full text Open Access Link to item Cite

Older adults benefit from more widespread brain network integration during working memory.

Journal Article Neuroimage · September 2020 Neuroimaging evidence suggests that the aging brain relies on a more distributed set of cortical regions than younger adults in order to maintain successful levels of performance during demanding cognitive tasks. However, it remains unclear how task demand ... Full text Open Access Link to item Cite

Structural Controllability Predicts Functional Patterns and Brain Stimulation Benefits Associated with Working Memory.

Journal Article J Neurosci · August 26, 2020 The brain is an inherently dynamic system, and much work has focused on the ability to modify neural activity through both local perturbations and changes in the function of global network ensembles. Network controllability is a recent concept in network n ... Full text Link to item Cite

Are the hippocampus and its network necessary for creativity?

Journal Article Proc Natl Acad Sci U S A · June 23, 2020 Full text Link to item Cite

Application of long-interval paired-pulse transcranial magnetic stimulation to motion-sensitive visual cortex does not lead to changes in motion discrimination.

Journal Article Neurosci Lett · June 21, 2020 The perception of visual motion is dependent on a set of occipitotemporal regions that are readily accessible to neuromodulation. The current study tested if paired-pulse Transcranial Magnetic Stimulation (ppTMS) could modulate motion perception by stimula ... Full text Open Access Link to item Cite

Site-Specific Effects of Online rTMS during a Working Memory Task in Healthy Older Adults.

Journal Article Brain Sci · April 27, 2020 The process of manipulating information within working memory is central to many cognitive functions, but also declines rapidly in old age. Improving this process could markedly enhance the health-span in older adults. The current pre-registered, randomize ... Full text Open Access Link to item Cite

The centrality of remembered moral and immoral actions in constructing personal identity.

Journal Article Memory (Hove, England) · February 2020 There is a widespread belief that morally good traits and qualities are particularly central to psychological constructions of personal identity. People have a strong tendency to believe that they truly are morally good. We suggest that autobiographical me ... Full text Cite

Cortical Overlap and Cortical-Hippocampal Interactions Predict Subsequent True and False Memory.

Journal Article The Journal of neuroscience : the official journal of the Society for Neuroscience · February 2020 The declarative memory system allows us to accurately recognize a countless number of items and events, particularly those strengthened by repeated exposure. However, increased familiarity due to repetition can also lead to false recognition of related but ... Full text Cite

Translation and validation of the moral foundations vignettes (MFVs) for the portuguese language in a Brazilian sample

Journal Article Judgment and Decision Making · January 1, 2020 The Moral Foundations Vignettes (MFVs) – a recently developed set of brief scenarios depicting violations of various moral foundations – enables investigators to directly examine differences in moral judgments about different topics. In the present study, ... Cite

Visual and semantic representations predict subsequent memory in perceptual and conceptual memory tests

Journal Article · 2020 It is generally assumed that the encoding of a single event generates multiple memory representations, which contribute differently to subsequent episodic memory. We used fMRI and representational similarity analysis (RSA) to examine how visual and semanti ... Full text Cite

Age-related dedifferentiation and hyperdifferentiation of perceptual and mnemonic representations

Journal Article · 2020 Preliminary evidence indicates that occipito-temporal activation patterns for different visual stimuli are less distinct in older (OAs) than younger (YAs) adults, suggesting a dedifferentiation of visual representations with aging. Yet, it is unclear if th ... Full text Cite

Functional Interplay Between Posterior Parietal Cortex and Hippocampus During Detection of Memory Targets and Non-targets.

Journal Article Frontiers in neuroscience · January 2020 Posterior parietal cortex is frequently activated during episodic memory retrieval but its role during retrieval and its interactions with the hippocampus are not yet clear. In this fMRI study, we investigated the neural bases of recognition memory when st ... Full text Cite

Effects of online repetitive transcranial magnetic stimulation (rTMS) on cognitive processing: A meta-analysis and recommendations for future studies.

Journal Article Neurosci Biobehav Rev · December 2019 Online repetitive transcranial magnetic stimulation (rTMS), applied while subjects are performing a task, is widely used to disrupt brain regions underlying cognition. However, online rTMS has also induced "paradoxical enhancement". Given the rapid prolife ... Full text Open Access Link to item Cite

The INTUIT Study: Investigating Neuroinflammation Underlying Postoperative Cognitive Dysfunction.

Journal Article J Am Geriatr Soc · April 2019 BACKGROUND/OBJECTIVES: Every year, up to 40% of the more than 16 million older Americans who undergo anesthesia/surgery develop postoperative cognitive dysfunction (POCD) or delirium. Each of these distinct syndromes is associated with decreased quality of ... Full text Open Access Link to item Cite

Reply to 'Mechanisms underlying resilience in ageing'.

Journal Article Nature reviews. Neuroscience · April 2019 Full text Cite

Online repetitive transcranial magnetic stimulation during working memory in younger and older adults: A randomized within-subject comparison.

Journal Article PLoS One · 2019 Working memory is the ability to perform mental operations on information that is stored in a flexible, limited capacity buffer. The ability to manipulate information in working memory is central to many aspects of human cognition, but also declines with h ... Full text Open Access Link to item Cite

Cooperative contributions of structural and functional connectivity to successful memory in aging.

Journal Article Netw Neurosci · 2019 Understanding the precise relation between functional connectivity and structural (white matter) connectivity and how these relationships account for cognitive changes in older adults are major challenges for neuroscience. We investigate these issues using ... Full text Open Access Link to item Cite

Age-related compensatory reconfiguration of PFC connections during episodic memory retrieval

Journal Article · 2019 During demanding cognitive tasks, older adults (OAs) frequently show greater prefrontal cortex (PFC) activity than younger adults (YAs). This age-related PFC activity increase is often associated with enhanced cognitive performance, suggesting functional c ... Full text Cite

Structural controllability predicts functional patterns and brain stimulation benefits associated with working memory

Journal Article · 2019 Summary The brain is an inherently dynamic system, and much work has focused on the ability to modify neural activity through both local perturbations and changes in the function of global network ensembles. Network controllability is a recent con ... Full text Cite

Complementary topology of maintenance and manipulation brain networks in working memory.

Journal Article Sci Rep · December 13, 2018 Working memory (WM) is assumed to consist of a process that sustains memory representations in an active state (maintenance) and a process that operates on these activated representations (manipulation). We examined evidence for two distinct, concurrent co ... Full text Open Access Link to item Cite

Neural basis of goal-driven changes in knowledge activation.

Journal Article The European journal of neuroscience · December 2018 Depending on a person's goals, different aspects of stored knowledge are accessed. Decades of behavioral work document the flexible use of knowledge, but little neuroimaging work speaks to these questions. We used representational similarity analysis to in ... Full text Cite

Publisher Correction: Maintenance, reserve and compensation: the cognitive neuroscience of healthy ageing.

Journal Article Nature reviews. Neuroscience · December 2018 In Figure 3b of the originally published article, the colours of the bars were incorrectly reversed. The bars shown in green should have been shown in blue to represent the findings from older adults, whereas the bars shown in blue should have been shown i ... Full text Cite

Process-Specific Alliances (PSAs) in Cognitive Neuroscience.

Journal Article Trends in cognitive sciences · November 2018 Most cognitive neuroscience theories have focused on the functions of individual brain regions, but cognitive abilities depend also on functional interactions among multiple regions. Many recent studies on these interactions have examined large-scale, rest ... Full text Cite

Maintenance, reserve and compensation: the cognitive neuroscience of healthy ageing.

Journal Article Nature reviews. Neuroscience · November 2018 Cognitive ageing research examines the cognitive abilities that are preserved and/or those that decline with advanced age. There is great individual variability in cognitive ageing trajectories. Some older adults show little decline in cognitive ability co ... Full text Cite

Feedback-Based Learning in Aging: Contributions and Trajectories of Change in Striatal and Hippocampal Systems.

Journal Article J Neurosci · September 26, 2018 The striatum supports learning from immediate feedback by coding prediction errors (PEs), whereas the hippocampus (HC) plays a parallel role in learning from delayed feedback. Both regions show evidence of decline in human aging, but behavioral research su ... Full text Link to item Cite

Functional networks underlying item and source memory: shared and distinct network components and age-related differences.

Journal Article Neurobiol Aging · September 2018 Although the medial temporal lobes (MTLs) are critical for both item memory (IM) and source memory (SM), the lateral prefrontal cortex and posterior parietal cortex play a greater role during SM than IM. It is unclear, however, how these differences transl ... Full text Link to item Cite

Introducing I2head database

Conference Proceedings - PETMEI 2018: Pervasive Eye Tracking and Mobile Eye-Based Interaction · June 15, 2018 I2Head database has been created with the aim to become an optimal reference for low cost gaze estimation. It exhibits the following outstanding characteristics: it takes into account key aspects of low resolution eye tracking technology; it combines image ... Full text Cite

Supervised Descent Method (SDM) applied to accurate pupil detection in off-the-shelf eye tracking systems

Conference Eye Tracking Research and Applications Symposium (ETRA) · June 14, 2018 The precise detection of pupil/iris center is key to estimate gaze accurately. This fact becomes specially challenging in low cost frameworks in which the algorithms employed for high performance systems fail. In the last years an outstanding effort has be ... Full text Cite

Knowledge supports memory retrieval through familiarity, not recollection.

Journal Article Neuropsychologia · May 2018 Semantic memory, or general knowledge of the world, guides learning and supports the formation and retrieval of new episodic memories. Behavioral evidence suggests that this knowledge effect is supported by recollection-a more controlled form of memory ret ... Full text Cite

Neural mechanisms underlying subsequent memory for personal beliefs:An fMRI study.

Journal Article Cognitive, affective & behavioral neuroscience · April 2018 Many fMRI studies have examined the neural mechanisms supporting emotional memory for stimuli that generate emotion rather automatically (e.g., a picture of a dangerous animal or of appetizing food). However, far fewer studies have examined how memory is i ... Full text Cite

Excitatory TMS Boosts Memory Representations

Journal Article · March 10, 2018 Abstract Brain stimulation technologies have seen increasing application in basic science investigations, specifically towards the goal of improving memory functioning. However, proposals concerning the neural mechanisms underlying cognitive enhancement of ... Full text Cite

Search and recovery of autobiographical and laboratory memories: Shared and distinct neural components.

Journal Article Neuropsychologia · February 2018 Functional neuroimaging evidence suggests that there are differences in the neural correlates of episodic memory for laboratory stimuli (laboratory memory) and for events from one's own life (autobiographical memory). However, this evidence is scarce and o ... Full text Cite

Task-related changes in degree centrality and local coherence of the posterior cingulate cortex after major cardiac surgery in older adults.

Journal Article Hum Brain Mapp · February 2018 OBJECTIVES: Older adults often display postoperative cognitive decline (POCD) after surgery, yet it is unclear to what extent functional connectivity (FC) alterations may underlie these deficits. We examined for postoperative voxel-wise FC changes in respo ... Full text Open Access Link to item Cite

Age differences in false memory: The importance of retrieval monitoring processes and their modulation by memory quality.

Journal Article Psychology and aging · February 2018 Older adults are more likely than younger adults to falsely recall past episodes that occurred differently or not at all. We examined whether older adults' propensity for false associative memory is related to declines in postretrieval monitoring processes ... Full text Cite

Contributions of the ventral parietal cortex to declarative memory.

Journal Article Handb Clin Neurol · 2018 Our understanding of the role that ventral parietal cortex (VPC) plays in declarative memory processes has changed dramatically over the last two decades. The goal of this chapter is to provide a concise overview data concerning VPC involvement in episodic ... Full text Link to item Cite

Excitatory TMS modulates memory representations.

Journal Article Cogn Neurosci · 2018 Brain stimulation technologies have seen increasing application in basic science investigations, specifically toward the goal of improving memory function. However, proposals concerning the neural mechanisms underlying cognitive enhancement often rely on s ... Full text Link to item Cite

A systematic study of repetitive transcranial magnetic stimulation to enhance working memory manipulation abilities

Journal Article · 2018 A core element of human working memory (WM) is the ability to perform mental operations on information that is stored in a flexible, limited capacity buffer. Given the profound importance of such WM manipulation (WM-M) abilities, there is a concerted effor ... Full text Cite

Frequency-specific neuromodulation of local and distant connectivity in aging and episodic memory function.

Journal Article Hum Brain Mapp · December 2017 A growing literature has focused on the brain's ability to augment processing in local regions by recruiting distant communities of neurons in response to neural decline or insult. In particular, both younger and older adult populations recruit bilateral p ... Full text Link to item Cite

Competing cues: Older adults rely on knowledge in the face of fluency.

Journal Article Psychology and aging · June 2017 Consumers regularly encounter repeated false claims in political and marketing campaigns, but very little empirical work addresses their impact among older adults. Repeated statements feel easier to process, and thus more truthful, than new ones (i.e., ill ... Full text Cite

From hippocampus to whole-brain: The role of integrative processing in episodic memory retrieval.

Journal Article Hum Brain Mapp · April 2017 Multivariate functional connectivity analyses of neuroimaging data have revealed the importance of complex, distributed interactions between disparate yet interdependent brain regions. Recent work has shown that topological properties of functional brain n ... Full text Link to item Cite

Hippocampal Contributions to the Large-Scale Episodic Memory Network Predict Vivid Visual Memories.

Journal Article Cerebral cortex (New York, N.Y. : 1991) · January 2017 A common approach in memory research is to isolate the function(s) of individual brain regions, such as the hippocampus, without addressing how those regions interact with the larger network. To investigate the properties of the hippocampus embedded within ... Full text Cite

Episodic Memory Decline and Healthy Aging

Chapter · January 1, 2017 One of the cognitive functions most affected by the aging process is our memory for personally experienced past events or episodic memory (EM). The advent of functional neuroimaging has greatly advanced our knowledge of the neural basis of EM and its decli ... Full text Cite

On Known Unknowns: Fluency and the Neural Mechanisms of Illusory Truth.

Journal Article Journal of cognitive neuroscience · May 2016 The "illusory truth" effect refers to the phenomenon whereby repetition of a statement increases its likelihood of being judged true. This phenomenon has important implications for how we come to believe oft-repeated information that may be misleading or u ... Full text Cite

The influence of self-awareness on emotional memory formation: an fMRI study.

Journal Article Social cognitive and affective neuroscience · April 2016 Evidence from functional neuroimaging studies of emotional perception shows that when attention is focused on external features of emotional stimuli (external perceptual orienting--EPO), the amygdala is primarily engaged, but when attention is turned inwar ... Full text Cite

Episodic Memory and Beyond: The Hippocampus and Neocortex in Transformation.

Journal Article Annual review of psychology · January 2016 The last decade has seen dramatic technological and conceptual changes in research on episodic memory and the brain. New technologies, and increased use of more naturalistic observations, have enabled investigators to delve deeply into the structures that ... Full text Cite

Frequency-specific neuromodulation of local and distant connectivity in aging & episodic memory function

Journal Article · 2016 A growing literature has focused on the brain’s ability to augment processing in local regions by recruiting distant communities of neurons in response to neural decline or insult. In particular, both younger and older adult populations recruit bilateral p ... Full text Cite

Episodic memory decline and healthy aging

Chapter · January 1, 2016 One of the cognitive functions most affected by the aging process is our memory for personally experienced past events or episodic memory (EM). The advent of functional neuroimaging has greatly advanced our knowledge of the neural basis of EM and its decli ... Full text Cite

Moral foundations vignettes: a standardized stimulus database of scenarios based on moral foundations theory.

Journal Article Behavior research methods · December 2015 Research on the emotional, cognitive, and social determinants of moral judgment has surged in recent years. The development of moral foundations theory (MFT) has played an important role, demonstrating the breadth of morality. Moral psychology has responde ... Full text Cite

Age-related differences in medial temporal lobe involvement during conceptual fluency.

Journal Article Brain research · July 2015 Not all memory processes are equally affected by aging. A widely accepted hypothesis is that older adults rely more on familiarity-based processing, typically linked with the perirhinal cortex (PRC), in the context of impaired recollection, linked with the ... Full text Cite

Cross-hemispheric collaboration and segregation associated with task difficulty as revealed by structural and functional connectivity.

Journal Article J Neurosci · May 27, 2015 Although it is known that brain regions in one hemisphere may interact very closely with their corresponding contralateral regions (collaboration) or operate relatively independent of them (segregation), the specific brain regions (where) and conditions (h ... Full text Open Access Link to item Cite

Reinstatement of individual past events revealed by the similarity of distributed activation patterns during encoding and retrieval.

Journal Article Journal of cognitive neuroscience · April 2015 Neurobiological memory models assume memory traces are stored in neocortex, with pointers in the hippocampus, and are then reactivated during retrieval, yielding the experience of remembering. Whereas most prior neuroimaging studies on reactivation have fo ... Full text Cite

Less wiring, more firing: low-performing older adults compensate for impaired white matter with greater neural activity.

Journal Article Cereb Cortex · April 2015 The reliable neuroimaging finding that older adults often show greater activity (over-recruitment) than younger adults is typically attributed to compensation. Yet, the neural mechanisms of over-recruitment in older adults (OAs) are largely unknown. Rodent ... Full text Open Access Link to item Cite

Age mediation of frontoparietal activation during visual feature search.

Journal Article Neuroimage · November 15, 2014 Activation of frontal and parietal brain regions is associated with attentional control during visual search. We used fMRI to characterize age-related differences in frontoparietal activation in a highly efficient feature search task, detection of a shape ... Full text Open Access Link to item Cite

Functional compensation in the ventromedial prefrontal cortex improves memory-dependent decisions in older adults.

Journal Article The Journal of neuroscience : the official journal of the Society for Neuroscience · November 2014 Everyday consumer choices frequently involve memory, as when we retrieve information about consumer products when making purchasing decisions. In this context, poor memory may affect decision quality, particularly in individuals with memory decline, such a ... Full text Cite

The neural basis of involuntary episodic memories.

Journal Article J Cogn Neurosci · October 2014 Voluntary episodic memories require an intentional memory search, whereas involuntary episodic memories come to mind spontaneously without conscious effort. Cognitive neuroscience has largely focused on voluntary memory, leaving the neural mechanisms of in ... Full text Open Access Link to item Cite

Respiration phase-locks to fast stimulus presentations: implications for the interpretation of posterior midline "deactivations".

Journal Article Human brain mapping · September 2014 The posterior midline region (PMR)-considered a core of the default mode network-is deactivated during successful performance in different cognitive tasks. The extent of PMR-deactivations is correlated with task-demands and associated with successful perfo ... Full text Cite

Prior perceptual processing enhances the effect of emotional arousal on the neural correlates of memory retrieval.

Journal Article Neurobiology of learning and memory · July 2014 A fundamental idea in memory research is that items are more likely to be remembered if encoded with a semantic, rather than perceptual, processing strategy. Interestingly, this effect has been shown to reverse for emotionally arousing materials, such that ... Full text Cite

Design issues of remote eye tracking systems with large range of movement

Conference Eye Tracking Research and Applications Symposium (ETRA) · January 1, 2014 One of the goals of the eye tracking community is to build systems that allow users to move freely. In general, there is a trade-off between the field of view of an eye tracking system and the gaze estimation accuracy. We aim to study how much the field of ... Full text Cite

Neural similarity between encoding and retrieval is related to memory via hippocampal interactions.

Journal Article Cerebral cortex (New York, N.Y. : 1991) · December 2013 A fundamental principle in memory research is that memory is a function of the similarity between encoding and retrieval operations. Consistent with this principle, many neurobiological models of declarative memory assume that memory traces are stored in c ... Full text Cite

A broader view of perirhinal function: from recognition memory to fluency-based decisions.

Journal Article The Journal of neuroscience : the official journal of the Society for Neuroscience · September 2013 Although it is well established that the perirhinal cortex (PRC) makes an important contribution to recognition memory, the specific nature of this contribution remains uncertain. The finding that PRC activity is reduced for old compared with new items is ... Full text Cite

Resting-state functional connectivity of ventral parietal regions associated with attention reorienting and episodic recollection

Journal Article Frontiers in Human Neuroscience · February 2, 2013 In functional neuroimaging studies, ventral parietal cortex (VPC) is recruited by very different cognitive tasks. Explaining the contributions VPC to these tasks has become a topic of intense study and lively debate. Perception studies frequently find VPC ... Full text Cite

Resting-state functional connectivity of ventral parietal regions associated with attention reorienting and episodic recollection.

Journal Article Frontiers in human neuroscience · January 2013 In functional neuroimaging studies, ventral parietal cortex (VPC) is recruited by very different cognitive tasks. Explaining the contributions of VPC to these tasks has become a topic of intense study and lively debate. Perception studies frequently find V ... Full text Cite

Memory Systems, Processing Modes, and Components: Functional Neuroimaging Evidence.

Journal Article Perspectives on psychological science : a journal of the Association for Psychological Science · January 2013 In the 1980s and 1990s, there was a major theoretical debate in the memory domain regarding the multiple memory systems and processing modes frameworks. The components of processing framework argued for a middle ground: Instead of neatly divided memory sys ... Full text Cite

NEURAL CORRELATES OF THE OWN-AGE BIAS IN YOUNGER AND OLDER ADULTS

Conference JOURNAL OF COGNITIVE NEUROSCIENCE · January 1, 2013 Link to item Cite

PERCEPTUAL PROCESSING ENHANCES THE EFFECT OF EMOTION ON RETRIEVAL: AN FMRI STUDY

Conference JOURNAL OF COGNITIVE NEUROSCIENCE · January 1, 2013 Link to item Cite

Neural correlates of opposing effects of emotional distraction on working memory and episodic memory: an event-related FMRI investigation.

Journal Article Frontiers in psychology · January 2013 A fundamental question in the emotional memory literature is why emotion enhances memory in some conditions but disrupts memory in other conditions. For example, separate studies have shown that emotional stimuli tend to be better remembered in long-term e ... Full text Cite

Explaining the encoding/retrieval flip: memory-related deactivations and activations in the posteromedial cortex.

Journal Article Neuropsychologia · December 2012 The posteromedial cortex (PMC) is strongly linked to episodic memory and age-related memory deficits. The PMC shows deactivations during a variety of demanding cognitive tasks as compared to passive baseline conditions and has been associated with the defa ... Full text Cite

Where is ELSA? The early to late shift in aging.

Journal Article Cerebral cortex (New York, N.Y. : 1991) · November 2012 Studies of cognitive and neural aging have recently provided evidence of a shift from an early- to late-onset cognitive control strategy, linked with temporally extended activity in the prefrontal cortex (PFC). It has been uncertain, however, whether this ... Full text Cite

Gaze estimation interpolation methods based on binocular data.

Journal Article IEEE transactions on bio-medical engineering · August 2012 Video oculography (VOG) is one of the most commonly used techniques for gaze tracking because it enables nonintrusive eye detection and tracking. Improving the eye tracking's accuracy and tolerance to user head movements is a common task in the field of ga ... Full text Cite

Age-related effects on the neural correlates of autobiographical memory retrieval.

Journal Article · July 2012 Older adults recall less episodically rich autobiographical memories (AM), however, the neural basis of this effect is not clear. Using functional MRI, we examined the effects of age during search and elaboration phases of AM retrieval. Our results suggest ... Full text Open Access Cite

Evaluation of pupil center-eye corner vector for gaze estimation using a web cam

Conference Eye Tracking Research and Applications Symposium (ETRA) · June 28, 2012 Low cost eye tracking is an actual challenging research topic for the eye tracking community. Gaze tracking based on a web cam and without infrared light is a searched goal to broaden the applications of eye tracking systems. Web cam based eye tracking res ... Full text Cite

Error characterization and compensation in eye tracking systems

Conference Eye Tracking Research and Applications Symposium (ETRA) · June 28, 2012 The development of systems that track the eye while allowing head movement is one of the most challenging objectives of gaze tracking researchers. Tracker accuracy decreases as the subject moves from the calibration position and is especially influenced by ... Full text Cite

Cognitive contributions of the ventral parietal cortex: an integrative theoretical account.

Journal Article Trends in cognitive sciences · June 2012 Although ventral parietal cortex (VPC) activations can be found in a variety of cognitive domains, these activations have been typically attributed to cognitive operations specific to each domain. In this article, we propose a hypothesis that can account f ... Full text Cite

Neural Basis of Autobiographical Memory

Chapter · May 24, 2012 The results of functional neuroimaging studies of autobiographical memory can inform our understanding of the neural correlates of recollection in several ways. First, autobiographical memory typically involves an integration of episodic and semantic memor ... Full text Cite

Commentary: Neuroscience frontiers of cognitive aging: Approaches to cognitive neuroscience of aging

Chapter · March 22, 2012 This chapter describes three methodological approaches of cognitive neuroscience of aging, and for each one, it underscores some interesting findings and notes some current issues. These are the neuropsychological approach, correlational approach, and acti ... Full text Cite

Prefrontal and medial temporal lobe contributions to relational memory in young and older adults

Chapter · March 22, 2012 When we remember a past event, we typically remember not only the various components of the event, or item memory (IM), but also the associations among these components, or relational memory (RM). RM is more sensitive than IM to several memory disorders, i ... Full text Cite

Hierarchical statistical shape models of multiobject anatomical structures: application to brain MRI.

Journal Article IEEE transactions on medical imaging · March 2012 The accurate segmentation of subcortical brain structures in magnetic resonance (MR) images is of crucial importance in the interdisciplinary field of medical imaging. Although statistical approaches such as active shape models (ASMs) have proven to be par ... Full text Cite

Near real-time stereo matching using geodesic diffusion.

Journal Article IEEE transactions on pattern analysis and machine intelligence · February 2012 Adaptive-weight algorithms currently represent the state of the art in local stereo matching. However, due to their computational requirements, these types of solutions are not suitable for real-time implementation. Here, we present a novel aggregation met ... Full text Cite

Hybrid eye detection algorithm for outdoor environments

Conference UbiComp'12 - Proceedings of the 2012 ACM Conference on Ubiquitous Computing · January 1, 2012 When performing eye detection in a driving scenario, new challenges arise that do not occur in a standard indoor eye tracking session. Rapid subject movement, non-controlled fast light variation and partial or total occlusions are the main problems that mu ... Full text Cite

The architecture of cross-hemispheric communication in the aging brain: linking behavior to functional and structural connectivity.

Journal Article Cereb Cortex · January 2012 Contralateral recruitment remains a controversial phenomenon in both the clinical and normative populations. To investigate the neural correlates of this phenomenon, we explored the tendency for older adults to recruit prefrontal cortex (PFC) regions contr ... Full text Open Access Link to item Cite

"Implicit contamination" extends across multiple methodologies: Implications for fMRI.

Journal Article Cognitive neuroscience · January 2012 Abstract The article "More than a feeling: Pervasive influences of memory without awareness of retrieval" reviews evidence from ERP studies of recognition memory that the FN400 effect typically ascribed to familiarity may index implicit memory that occurs ... Full text Cite

Brain imaging investigation of the memory-enhancing effect of emotion.

Journal Article Journal of visualized experiments : JoVE · December 1, 2011 Emotional events tend to be better remembered than non-emotional events. One goal of cognitive and affective neuroscientists is to understand the neural mechanisms underlying this enhancing effect of emotion on memory. A method that has proven particularly ... Cite

Gaze estimation

Chapter · December 1, 2011 The main objective of gaze trackers is to provide an accurate estimate of the user's gaze by using the eye tracking information. Gaze, in its most general form, can be considered to be the line of sight or line of gaze, as 3D (imaginary) lines with respect ... Full text Cite

Topography-based detection of the iris centre using multiple-resolution images

Conference Proceedings - 2011 Irish Machine Vision and Image Processing Conference, IMVIP 2011 · December 1, 2011 Low cost iris tracking is one of the most challenging research topics for the eye-tracking community. To this end, accurate detection of the iris centre in images captured by a web cam is a major goal. We propose a novel method for iris detection that is b ... Full text Cite

A novel heterogeneous framework for stereo matching

Conference Proceedings of the 2011 International Conference on Image Processing, Computer Vision, and Pattern Recognition, IPCV 2011 · December 1, 2011 Local stereo matching algorithms based on the adapting-weights strategy achieve accuracy similar to global approaches. One of the major problems of these local algorithms is that they are computationally expensive. However, algorithms with reduced computat ... Cite

Multi-shape - Hierarchical active shape models

Conference Proceedings of the 2011 International Conference on Image Processing, Computer Vision, and Pattern Recognition, IPCV 2011 · December 1, 2011 Active Shape Models (ASMs) have become one of the most widespread segmentation paradigms since their inception in the early nineties. However, their capability to capture and model the shapes' variability is highly conditioned by the training set used. Try ... Cite

Age-related dedifferentiation of learning systems: an fMRI study of implicit and explicit learning.

Journal Article Neurobiology of aging · December 2011 Abundant research finds that in young adults explicit learning (EL) is more dependent on the medial temporal lobes (MTL) whereas implicit learning (IL) is more dependent on the striatum. Using fMRI, we investigated age differences in each task and whether ... Full text Cite

Neural correlates of confidence during item recognition and source memory retrieval: evidence for both dual-process and strength memory theories.

Journal Article Journal of cognitive neuroscience · December 2011 Although the medial-temporal lobes (MTL), PFC, and parietal cortex are considered primary nodes in the episodic memory network, there is much debate regarding the contributions of MTL, PFC, and parietal subregions to recollection versus familiarity (dual-p ... Full text Cite

Overlapping parietal activity in memory and perception: evidence for the attention to memory model.

Journal Article J Cogn Neurosci · November 2011 The specific role of different parietal regions to episodic retrieval is a topic of intense debate. According to the Attention to Memory (AtoM) model, dorsal parietal cortex (DPC) mediates top-down attention processes guided by retrieval goals, whereas ven ... Full text Link to item Cite

A "snapshot" of declarative memory: Differing developmental trajectories in episodic and autobiographical memory.

Journal Article Memory (Hove, England) · November 2011 Episodic and autobiographical memory are clearly related, yet in both the adult and developmental literatures it is difficult to compare them because of differences in how the constructs are assessed, including differences in content, levels of control, an ... Full text Cite

Gender differences in autobiographical memory for everyday events: retrieval elicited by SenseCam images versus verbal cues.

Journal Article Memory (Hove, England) · October 2011 Gender differences are frequently observed in autobiographical memory (AM). However, few studies have investigated the neural basis of potential gender differences in AM. In the present functional MRI (fMRI) study we investigated gender differences in AMs ... Full text Cite

Brain-derived neurotrophic factor val66met polymorphism and hippocampal activation during episodic encoding and retrieval tasks.

Journal Article Hippocampus · September 2011 Brain-derived neurotrophic factor (BDNF) is a neurotrophin which has been shown to regulate cell survival and proliferation, as well as synaptic growth and hippocampal long-term potentiation. A naturally occurring single nucleotide polymorphism in the huma ... Full text Cite

Watching my mind unfold versus yours: an fMRI study using a novel camera technology to examine neural differences in self-projection of self versus other perspectives.

Journal Article Journal of cognitive neuroscience · June 2011 Self-projection, the capacity to re-experience the personal past and to mentally infer another person's perspective, has been linked to medial prefrontal cortex (mPFC). In particular, ventral mPFC is associated with inferences about one's own self, whereas ... Full text Cite

Brain imaging investigation of the memory-enhancing effect of emotion.

Journal Article Journal of visualized experiments : JoVE · May 2011 Emotional events tend to be better remembered than non-emotional events. One goal of cognitive and affective neuroscientists is to understand the neural mechanisms underlying this enhancing effect of emotion on memory. A method that has proven particularly ... Full text Cite

Neural correlates of emotional processing in depression: changes with cognitive behavioral therapy and predictors of treatment response.

Journal Article Journal of psychiatric research · May 2011 Major depressive disorder (MDD) is characterized by the presence of disturbances in emotional processing. However, the neural correlates of these alterations, and how they may be affected by therapeutic interventions, remain unclear. The present study addr ... Full text Open Access Cite

The porous boundaries between explicit and implicit memory: behavioral and neural evidence.

Journal Article Annals of the New York Academy of Sciences · April 2011 Explicit memory refers to the conscious retrieval of past information or experiences, whereas implicit memory refers to an unintentional or nonconscious form of retrieval. Much of the literature in cognitive psychology and cognitive neuroscience has focuse ... Full text Cite

The hippocampus is coupled with the default network during memory retrieval but not during memory encoding.

Journal Article PloS one · April 2011 The brain's default mode network (DMN) is activated during internally-oriented tasks and shows strong coherence in spontaneous rest activity. Despite a surge of recent interest, the functional role of the DMN remains poorly understood. Interestingly, the D ... Full text Cite

Level of processing modulates the neural correlates of emotional memory formation.

Journal Article Journal of cognitive neuroscience · April 2011 Emotion is known to influence multiple aspects of memory formation, including the initial encoding of the memory trace and its consolidation over time. However, the neural mechanisms whereby emotion impacts memory encoding remain largely unexplored. The pr ... Full text Cite

Cognitive and neural contributors to emotion regulation in aging.

Journal Article Soc Cogn Affect Neurosci · April 2011 Older adults, compared to younger adults, focus on emotional well-being. While the lifespan trajectory of emotional processing and its regulation has been characterized behaviorally, few studies have investigated the underlying neural mechanisms. Here, old ... Full text Open Access Link to item Cite

Emotion processing in the aging brain is modulated by semantic elaboration.

Journal Article Neuropsychologia · March 2011 The neural correlates of emotion processing have been shown to vary with age: older adults (OAs) exhibit increased frontal activations and, under some circumstances, decreased amygdala activations relative to young adults (YAs) during emotion processing. S ... Full text Cite

Full-automatic glottis segmentation with active shape models

Conference Models and Analysis of Vocal Emissions for Biomedical Applications - 7th International Workshop, MAVEBA 2011 · January 1, 2011 In this paper we present a new fullautomatic glottis segmentation scheme that combines traditional bottom-up image processing techniques with high-level shape constraints provided by the active shape Models. unlike previous statistical segmentation approac ... Cite

Neuroimaging of Healthy Cognitive Aging

Chapter · January 1, 2011 Cognitive aging research and theory has, until recently, been based upon behavioral measures of cognitive performance such as response time and accuracy. Results from behavioral methodologies have indicated a general age-related decline in cognitive functi ... Full text Cite

Shared brain activity for aesthetic and moral judgments: implications for the Beauty-is-Good stereotype.

Journal Article Social cognitive and affective neuroscience · January 2011 The Beauty-is-Good stereotype refers to the assumption that attractive people possess sociably desirable personalities and higher moral standards. The existence of this bias suggests that the neural mechanisms for judging facial attractiveness and moral go ... Full text Cite

Remembering beauty: roles of orbitofrontal and hippocampal regions in successful memory encoding of attractive faces.

Journal Article NeuroImage · January 2011 Behavioral data have shown that attractive faces are better remembered but the neural mechanisms of this effect are largely unknown. To investigate this issue, female participants were scanned with event-related functional MRI (fMRI) while rating the attra ... Full text Cite

Neural mechanisms of context effects on face recognition: automatic binding and context shift decrements.

Journal Article J Cogn Neurosci · November 2010 Although people do not normally try to remember associations between faces and physical contexts, these associations are established automatically, as indicated by the difficulty of recognizing familiar faces in different contexts ("butcher-on-the-bus" phe ... Full text Open Access Link to item Cite

Adult age differences in functional connectivity during executive control.

Journal Article Neuroimage · August 15, 2010 Task switching requires executive control processes that undergo age-related decline. Previous neuroimaging studies have identified age-related differences in brain activation associated with global switching effects (dual-task blocks versus single-task bl ... Full text Open Access Link to item Cite

Temporal lobe functional activity and connectivity in young adult APOE varepsilon4 carriers.

Journal Article Alzheimers Dement · July 2010 BACKGROUND: We sought to determine if the APOE epsilon4 allele influences both the functional activation and connectivity of the medial temporal lobes (MTLs) during successful memory encoding in young adults. METHODS: Twenty-four healthy young adults, i.e. ... Full text Link to item Cite

COMT val108/158 met genotype affects neural but not cognitive processing in healthy individuals.

Journal Article Cerebral cortex (New York, N.Y. : 1991) · March 2010 The relationship between cognition and a functional polymorphism in the catechol-O-methlytransferase (COMT) gene, val108/158met, is one of debate in the literature. Furthermore, based on the dopaminergic differences associated with the COMT val108/158met g ... Full text Cite

Mental hoop diaries: emotional memories of a college basketball game in rival fans.

Journal Article · February 10, 2010 The rivalry between the men's basketball teams of Duke University and the University of North Carolina-Chapel Hill (UNC) is one of the most storied traditions in college sports. A subculture of students at each university form social bonds with fellow fans ... Full text Open Access Cite

Effects of aging on functional connectivity of the amygdala during negative evaluation: a network analysis of fMRI data.

Journal Article Neurobiology of aging · February 2010 Previous evidence has suggested both preserved emotional function in aging and age-related differences in emotional processing, but the neural networks underlying such processing alterations in the context of preserved affective function are not clear. Usi ... Full text Cite

Overlapping brain activity between episodic memory encoding and retrieval: roles of the task-positive and task-negative networks.

Journal Article NeuroImage · January 2010 The notion that the brain is organized into two complementary networks, one that is task-positive and supports externally-oriented processing, and the other that is task-negative and supports internally-oriented processing, has recently attracted increasin ... Full text Cite

Functional neuroimaging studies of aging and emotion: fronto-amygdalar differences during emotional perception and episodic memory.

Journal Article Journal of the International Neuropsychological Society : JINS · November 2009 Emotional processes are enhanced in aging, such that aging is characterized by superior emotional regulation. This article provides a brief review of the neural bases supporting this effect with a focus on functional neuroimaging studies of perception and ... Full text Cite

Encoding and retrieving faces and places: distinguishing process- and stimulus-specific differences in brain activity.

Journal Article Neuropsychologia · September 2009 Among the most fundamental issues in cognitive neuroscience is how the brain may be organized into process-specific and stimulus-specific regions. In the episodic memory domain, most functional neuroimaging studies have focused on the former dimension, typ ... Full text Cite

Neural correlates of idiographic goal priming in depression: goal-specific dysfunctions in the orbitofrontal cortex.

Journal Article Soc Cogn Affect Neurosci · September 2009 We used functional magnetic resonance imaging (fMRI) to determine whether depressed (vs non-depressed) adults showed differences in cortical activation in response to stimuli representing personal goals. Drawing upon regulatory focus theory as well as prev ... Full text Link to item Cite

Common and specific brain regions in high- versus low-confidence recognition memory.

Journal Article Brain research · July 2009 The goal of the present functional magnetic resonance imaging (fMRI) study was to investigate whether and to what extent brain regions involved in high-confidence recognition (HCR) versus low-confidence recognition (LCR) overlap or separate from each other ... Full text Cite

Assessing the effects of age on long white matter tracts using diffusion tensor tractography.

Journal Article Neuroimage · June 2009 Aging is associated with significant white matter deterioration and this deterioration is assumed to be at least partly a consequence of myelin degeneration. The present study investigated specific predictions of the myelodegeneration hypothesis using diff ... Full text Link to item Cite

Cognitive Neuroscience of Aging: Linking cognitive and cerebral aging

Book · May 1, 2009 Until very recently, our knowledge about the neural basis of cognitive aging was based on two disciplines that had very little contact with each other. Whereas the neuroscience of aging investigated the effects of aging on the brain independently of age-re ... Full text Cite

Age-related changes in hemispheric organization

Chapter · May 1, 2009 This chapter links recent behavioral and neuroimaging findings on hemispheric lateralization and aging to general ideas about hemispheric organization. The chapter has three main sections. The first section focuses on hemispheric organization. It reviews e ... Full text Cite

Cognitive Neuroscience of Aging: Emergence of a New Discipline

Chapter · May 1, 2009 This chapter begins with a brief discussion of the new discipline of cognitive neuroscience of aging (CNA). The main goal of CNA is to link the effects of aging on cognition to the effects of aging on the brain. An overview of the four main sections of the ... Full text Cite

Cerebral white matter integrity mediates adult age differences in cognitive performance.

Journal Article J Cogn Neurosci · February 2009 Previous research has established that age-related decline occurs in measures of cerebral white matter integrity, but the role of this decline in age-related cognitive changes is not clear. To conclude that white matter integrity has a mediating (causal) c ... Full text Link to item Cite

[Physiopathology and recording techniques of the ocular movements].

Journal Article Anales del sistema sanitario de Navarra · January 2009 A number of functional systems are involved in the control of eye movements. The vestibulo-ocular and optokinetic reflexes are automatic responses that compensate for the movements of the head and those of the visual environment in order to stabilize the r ... Full text Cite

When remembering hinders learning

Journal Article PLoS Biology · 2009 Cite

Posterior midline and ventral parietal activity is associated with retrieval success and encoding failure.

Journal Article Frontiers in human neuroscience · January 2009 The ventral part of lateral posterior parietal cortex (VPC) and the posterior midline region (PMR), including the posterior cingulate cortex and precuneus, tend to show deactivation during demanding cognitive tasks, and have been associated with the defaul ... Full text Cite

When learning and remembering compete: a functional MRI study.

Journal Article PLoS biology · January 2009 Recent functional neuroimaging evidence suggests a bottleneck between learning new information and remembering old information. In two behavioral experiments and one functional MRI (fMRI) experiment, we tested the hypothesis that learning and remembering c ... Full text Cite

Effects of aging on functional connectivity of the amygdala for subsequent memory of negative pictures: a network analysis of functional magnetic resonance imaging data.

Journal Article Psychological science · January 2009 Aging is associated with preserved enhancement of emotional memory, as well as with age-related reductions in memory for negative stimuli, but the neural networks underlying such alterations are not clear. We used a subsequent-memory paradigm to identify b ... Full text Cite

Evaluation of corneal refraction in a model of a gaze tracking system.

Journal Article IEEE transactions on bio-medical engineering · December 2008 The complexity of corneal refraction modeling complicates geometrical analysis of gaze tracking systems. The task can be accomplished in different ways by means of different approximations. Depending on the assumptions made, errors can arise and the accura ... Full text Cite

Role of amygdala connectivity in the persistence of emotional memories over time: an event-related FMRI investigation.

Journal Article Cerebral cortex (New York, N.Y. : 1991) · November 2008 According to the consolidation hypothesis, enhanced memory for emotional information reflects the modulatory effect of the amygdala on the medial temporal lobe (MTL) memory system during consolidation. Although there is evidence that amygdala-MTL connectiv ... Full text Cite

A novel gaze estimation system with one calibration point.

Journal Article IEEE transactions on systems, man, and cybernetics. Part B, Cybernetics : a publication of the IEEE Systems, Man, and Cybernetics Society · August 2008 The design of robust and high-performance gaze-tracking systems is one of the most important objectives of the eye-tracking community. In general, a subject calibration procedure is needed to learn system parameters and be able to estimate the gaze directi ... Full text Cite

The parietal cortex and episodic memory: an attentional account.

Journal Article Nature reviews. Neuroscience · August 2008 The contribution of the parietal cortex to episodic memory is a fascinating scientific puzzle. On the one hand, parietal lesions do not normally yield severe episodic-memory deficits; on the other hand, parietal activations are seen frequently in functiona ... Full text Cite

Age-related differences in brain activity during true and false memory retrieval.

Journal Article Journal of cognitive neuroscience · August 2008 Compared to young adults, older adults show not only a reduction in true memories but also an increase in false memories. We investigated the neural bases of these age effects using functional magnetic resonance imaging and a false memory task that resembl ... Full text Cite

The short and long of it: neural correlates of temporal-order memory for autobiographical events.

Journal Article · July 2008 Previous functional neuroimaging studies of temporal-order memory have investigated memory for laboratory stimuli that are causally unrelated and poor in sensory detail. In contrast, the present functional magnetic resonance imaging (fMRI) study investigat ... Full text Open Access Cite

Effects of aging on the neural correlates of successful item and source memory encoding.

Journal Article J Exp Psychol Learn Mem Cogn · July 2008 To investigate the neural basis of age-related source memory (SM) deficits, young and older adults were scanned with fMRI while encoding faces, scenes, and face-scene pairs. Successful encoding activity was identified by comparing encoding activity for sub ... Full text Link to item Cite

Age-related slowing of memory retrieval: contributions of perceptual speed and cerebral white matter integrity.

Journal Article Neurobiol Aging · July 2008 Previous research suggests that, in reaction time (RT) measures of episodic memory retrieval, the unique effects of adult age are relatively small compared to the effects aging shares with more elementary abilities such as perceptual speed. Little is known ... Full text Link to item Cite

Que PASA? The posterior-anterior shift in aging.

Journal Article Cereb Cortex · May 2008 A consistent finding from functional neuroimaging studies of cognitive aging is an age-related reduction in occipital activity coupled with increased frontal activity. This posterior-anterior shift in aging (PASA) has been typically attributed to functiona ... Full text Link to item Cite

Recollection- and familiarity-based memory in healthy aging and amnestic mild cognitive impairment.

Journal Article Neuropsychology · March 2008 Little is known about the cognitive mechanisms of the memory impairment associated with amnestic mild cognitive impairment (aMCI). We explored recollection and familiarity in 27 healthy young adults, 45 healthy older adults, and 17 individuals with aMCI. R ... Full text Cite

The Memory Enhancing Effect of Emotion: Functional Neuroimaging Evidence

Chapter · January 11, 2008 Emotional events are usually remembered better than neutral events. The anatomical and functional correlates of this phenomenon have been investigated in both animals and humans, with approaches ranging from neuropsychological and pharmacological to electr ... Full text Cite

Role of parietal regions in episodic memory retrieval: the dual attentional processes hypothesis.

Journal Article Neuropsychologia · January 2008 Although parietal cortex is frequently activated during episodic memory retrieval, damage to this region does not markedly impair episodic memory. To account for these and other findings, a new dual attentional processes (DAP) hypothesis is proposed. Accor ... Full text Cite

The spatiotemporal dynamics of autobiographical memory: neural correlates of recall, emotional intensity, and reliving.

Journal Article · January 2008 We sought to map the time course of autobiographical memory retrieval, including brain regions that mediate phenomenological experiences of reliving and emotional intensity. Participants recalled personal memories to auditory word cues during event-related ... Full text Open Access Cite

Orbitofrontal and hippocampal contributions to memory for face-name associations: the rewarding power of a smile.

Journal Article Neuropsychologia · January 2008 Memory processes can be enhanced by reward, and social signals such a smiling face can be rewarding to humans. Using event-related functional MRI (fMRI), we investigated the rewarding effect of a simple smile during the encoding and retrieval of face-name ... Full text Cite

Parietal lobe and episodic memory: bilateral damage causes impaired free recall of autobiographical memory.

Journal Article The Journal of neuroscience : the official journal of the Society for Neuroscience · December 2007 Does the parietal lobe have a critical role in memory? The neuroimaging literature indicates that it has an important role, especially in episodic memory. However, the neuropsychological literature suggests that its role is more limited to attentional, spa ... Full text Cite

Trusting our memories: dissociating the neural correlates of confidence in veridical versus illusory memories.

Journal Article The Journal of neuroscience : the official journal of the Society for Neuroscience · November 2007 Although memory confidence and accuracy tend to be positively correlated, people sometimes remember with high confidence events that never happened. How can confidence correlate with accuracy but apply also to illusory memories? One possible explanation is ... Full text Cite

Effects of aging on true and false memory formation: an fMRI study.

Journal Article Neuropsychologia · November 2007 Compared to young, older adults are more likely to forget events that occurred in the past as well as remember events that never happened. Previous studies examining false memories and aging have shown that these memories are more likely to occur when new ... Full text Cite

Effects of aging on transient and sustained successful memory encoding activity.

Journal Article Neurobiology of aging · November 2007 Event-related fMRI studies have investigated age-related changes in encoding by identifying greater activity for items that are later remembered than for those that are forgotten (difference in memory, or Dm). The present study used hybrid blocked/event-re ... Full text Cite

Differential contributions of prefrontal, medial temporal, and sensory-perceptual regions to true and false memory formation.

Journal Article Cerebral cortex (New York, N.Y. : 1991) · September 2007 The neural correlates of true memory formation (TMF) and false memory formation (FMF) were investigated using functional magnetic resonance imaging (fMRI). Using a parametric subsequent memory paradigm, encoding activity was analyzed as a function of wheth ... Full text Cite

Neural correlates of promotion and prevention goal activation: an fMRI study using an idiographic approach.

Journal Article J Cogn Neurosci · July 2007 Regulatory focus theory [Higgins, E. T. Beyond pleasure and pain. American Psychologist, 52, 1280-1300, 1997] postulates two social-cognitive motivational systems, the promotion and prevention systems, for self-regulation of goal pursuit. However, the neur ... Full text Link to item Cite

Unity and diversity of tonic and phasic executive control components in episodic and working memory.

Journal Article NeuroImage · July 2007 The present study aimed to delineate the extent to which unitary executive functions might be shared across the separate domains of episodic and working memory. A mixed blocked/event-related functional magnetic resonance imaging (fMRI) design was employed ... Full text Cite

Functional neuroimaging of autobiographical memory.

Journal Article Trends in cognitive sciences · May 2007 Functional neuroimaging studies of autobiographical memory have grown dramatically in recent years. These studies are important because they can investigate the neural correlates of processes that are difficult to study using laboratory stimuli, including: ... Full text Cite

Study of on-line adaptive discriminant analysis for EEG-based brain computer interfaces.

Journal Article IEEE transactions on bio-medical engineering · March 2007 A study of different on-line adaptive classifiers, using various feature types is presented. Motor imagery brain computer interface (BCI) experiments were carried out with 18 naive able-bodied subjects. Experiments were done with three two-class, cue-based ... Full text Cite

Adult age differences in the functional neuroanatomy of visual attention: a combined fMRI and DTI study.

Journal Article Neurobiol Aging · March 2007 We combined measures from event-related functional magnetic resonance imaging (fMRI), diffusion tensor imaging (DTI), and cognitive performance (visual search response time) to test the hypotheses that differences between younger and older adults in top-do ... Full text Link to item Cite

Distinguishing the neural correlates of episodic memory encoding and semantic memory retrieval.

Journal Article Psychological science · February 2007 Episodic memory and semantic memory interact very closely. In particular, episodic memory encoding (EE) tends to elicit semantic memory retrieval (SR), and vice versa. Thus, similar activations for EE and SR in functional neuroimaging studies may reflect s ... Full text Cite

Role of aerobic fitness and aging on cerebral white matter integrity.

Journal Article Ann N Y Acad Sci · February 2007 Neuroimaging research suggests that cerebral white matter (WM) integrity, as reflected in fractional anisotropy (FA) via diffusion tensor imaging (DTI), is decreased in older adults, especially in the prefrontal regions of the brain. Behavioral investigati ... Full text Link to item Cite

Study of discriminant analysis applied to motor imagery bipolar data.

Journal Article Medical & biological engineering & computing · January 2007 We present a study of linear, quadratic and regularized discriminant analysis (RDA) applied to motor imagery data of three subjects. The aim of the work was to find out which classifier can separate better these two-class motor imagery data: linear, quadra ... Full text Cite

Episodic memory decline and healthy aging

Chapter · January 1, 2007 One of the functions most affected by the aging process is our memory for personally experienced past events, or episodic memory. The advent of human brain imaging techniques has greatly advanced our knowledge of the neural basis of episodic memory and its ... Full text Cite

Sustained and transient neural modulations in prefrontal cortex related to declarative long-term memory, working memory, and attention.

Journal Article Cortex; a journal devoted to the study of the nervous system and behavior · January 2007 Common activations in prefrontal cortex (PFC) during episodic and semantic long-term memory (LTM) tasks have been hypothesized to reflect functional overlap in terms of working memory (WM) and cognitive control. To evaluate a WM account of LTM-general acti ... Full text Cite

Effects of healthy aging on hippocampal and rhinal memory functions: an event-related fMRI study.

Journal Article Cereb Cortex · December 2006 Event-related functional magnetic resonance imaging was used to study the effects of healthy aging on hippocampal and rhinal memory functions. Memory for past events can be based on retrieval accompanied by specific contextual details (recollection) or on ... Full text Link to item Cite

Role of prefrontal and anterior cingulate regions in decision-making processes shared by memory and nonmemory tasks.

Journal Article Cerebral cortex (New York, N.Y. : 1991) · November 2006 In the episodic retrieval (ER) domain, activations in right dorsolateral prefrontal cortex (DLPFC) are often attributed to postretrieval monitoring. Yet, right DLPFC activations are also frequently found during nonmemory tasks. To investigate the role of t ... Full text Cite

Triple dissociation in the medial temporal lobes: recollection, familiarity, and novelty.

Journal Article Journal of neurophysiology · October 2006 Memory for past events may be based on retrieval accompanied by specific contextual details (recollection) or on the feeling that an item is old (familiarity) or new (novelty) in the absence of contextual details. There are indications that recollection, f ... Full text Cite

The impact of emotion on human cognition: Functional neuroimaging evidence

Conference INTERNATIONAL JOURNAL OF PSYCHOPHYSIOLOGY · September 1, 2006 Link to item Cite

A fully on-line adaptive BCI.

Journal Article IEEE transactions on bio-medical engineering · June 2006 A viable fully on-line adaptive brain computer interface (BCI) is introduced. On-line experiments with nine naive and able-bodied subjects were carried out using a continuously adaptive BCI system. The data were analyzed and the viability of the system was ... Full text Cite

The medial temporal lobe distinguishes old from new independently of consciousness.

Journal Article The Journal of neuroscience : the official journal of the Society for Neuroscience · May 2006 Although it is widely accepted that the medial temporal lobes (MTLs) are critical for becoming aware that something happened in the past, there is virtually no evidence whether MTL sensitivity to event oldness also depends on conscious awareness. Using eve ... Full text Cite

Cognitive neuroscience of emotional memory.

Journal Article Nature reviews. Neuroscience · January 2006 Emotional events often attain a privileged status in memory. Cognitive neuroscientists have begun to elucidate the psychological and neural mechanisms underlying emotional retention advantages in the human brain. The amygdala is a brain structure that dire ... Full text Cite

Pupil brightness variation as a function of gaze direction

Conference Eye Tracking Research and Applications Symposium (ETRA) · December 1, 2005 Pupil detection represents one of the most critical aspects for eye tracking systems based on video oculography. A robust segmentation of the aforementioned feature determines to a large extent the degree of performance of the system. However, a question r ... Cite

Adaptive on-line classification for EEG-based brain computer interfaces with AAR parameters and band power estimates.

Journal Article Biomedizinische Technik. Biomedical engineering · November 2005 We present the result of on-line feedback Brain Computer Interface experiments using adaptive and non-adaptive feature extraction methods with an on-line adaptive classifier based on Quadratic Discriminant Analysis. Experiments were performed with 12 naïve ... Full text Cite

Neural correlates of relational memory: successful encoding and retrieval of semantic and perceptual associations.

Journal Article The Journal of neuroscience : the official journal of the Society for Neuroscience · February 2005 Using event-related functional magnetic resonance imaging, we identified brain regions involved in successful relational memory (RM) during encoding and retrieval for semantic and perceptual associations or in general, independent of phase and content. Par ... Full text Cite

Remembering one year later: role of the amygdala and the medial temporal lobe memory system in retrieving emotional memories.

Journal Article Proceedings of the National Academy of Sciences of the United States of America · February 2005 The memory-enhancing effect of emotion can be powerful and long-lasting. Most studies investigating the neural bases of this phenomenon have focused on encoding and early consolidation processes, and hence little is known regarding the contribution of retr ... Full text Cite

Co-activation of the amygdala, hippocampus and inferior frontal gyrus during autobiographical memory retrieval.

Journal Article · 2005 Functional MRI was used to investigate the role of medial temporal lobe and inferior frontal lobe regions in autobiographical recall. Prior to scanning, participants generated cue words for 50 autobiographical memories and rated their phenomenological prop ... Full text Open Access Cite

False memory across languages: implicit associative response vs fuzzy trace views.

Journal Article Memory (Hove, England) · January 2005 We investigated false recognition across languages using the Deese-Roediger-McDermott (DRM) paradigm. A group of English-French bilinguals studied lists of converging associates, some lists in English and some in French, and then performed a recognition te ... Full text Cite

Robust algorithm for pupil-glint vector detection in a video-oculography eyetracking system

Conference Proceedings - International Conference on Pattern Recognition · December 20, 2004 This paper presents a robust real time algorithm for an eye tracking system employing the well-known bright-pupil technique that performs an effective detection of the pupil and glint positions in the image. The accuracy in the processing is essential if a ... Full text Cite

VisualECG: A bluetooth based software for ECG monitoring on Personal Digital Assistants (PDAs)

Conference 2004 2nd IEEE/EMBS International Summer School on Medical Devices and Biosensors, ISSS-MDBS 2004 · December 1, 2004 VisualECG is a software application developed for ECG monitoring on Personal Digital Assistants (PDA's). Bluetooth technology is used to connect the ECG acquisition devices with the PDA receiver. This software is aimed to doctors that require a powerful to ... Cite

When less means more: deactivations during encoding that predict subsequent memory.

Journal Article NeuroImage · November 2004 In event-related functional MRI (fMRI) studies, greater activity for items that are subsequently remembered (R-items) than for items that are subsequently forgotten (F-items), or Dm effect (Difference in memory), has been attributed to successful encoding ... Full text Cite

Brain activity during episodic retrieval of autobiographical and laboratory events: an fMRI study using a novel photo paradigm.

Journal Article · November 2004 Functional neuroimaging studies of episodic memory retrieval generally measure brain activity while participants remember items encountered in the laboratory ("controlled laboratory condition") or events from their own life ("open autobiographical conditio ... Open Access Cite

Dissociable effects of arousal and valence on prefrontal activity indexing emotional evaluation and subsequent memory: an event-related fMRI study.

Journal Article NeuroImage · September 2004 Prefrontal cortex (PFC) activity associated with emotional evaluation and subsequent memory was investigated with event-related functional MRI (fMRI). Participants were scanned while rating the pleasantness of emotionally positive, negative, and neutral pi ... Full text Cite

Interaction between the amygdala and the medial temporal lobe memory system predicts better memory for emotional events.

Journal Article Neuron · June 2004 Emotional events are remembered better than neutral events possibly because the amygdala enhances the function of medial temporal lobe (MTL) memory system (modulation hypothesis). Although this hypothesis has been supported by much animal research, evidenc ... Full text Cite

Age-related preservation of top-down attentional guidance during visual search.

Journal Article Psychol Aging · June 2004 Younger (19-27 years of age) and older (60-82 years of age) adults performed a letter search task in which a color singleton was either noninformative (baseline condition) or highly informative (guided condition) regarding target location. In the guided co ... Full text Link to item Cite

Task-independent and task-specific age effects on brain activity during working memory, visual attention and episodic retrieval.

Journal Article Cerebral cortex (New York, N.Y. : 1991) · April 2004 It is controversial whether the effects of aging on various cognitive functions have the same common cause or several different causes. To investigate this issue, we scanned younger and older adults with functional magnetic resonance imaging (fMRI) while p ... Full text Cite

Lateralization of prefrontal activity during episodic memory retrieval: evidence for the production-monitoring hypothesis.

Journal Article Journal of cognitive neuroscience · February 2003 We propose a new hypothesis concerning the lateralization of prefrontal cortex (PFC) activity during verbal episodic memory retrieval. The hypothesis states that the left PFC is differentially more involved in semantically guided information production tha ... Full text Cite

Common prefrontal activations during working memory, episodic memory, and semantic memory.

Journal Article Neuropsychologia · January 2003 Regions of the prefrontal cortex (PFC) are typically activated in many different cognitive functions. In most studies, the focus has been on the role of specific PFC regions in specific cognitive domains, but more recently similarities in PFC activations a ... Full text Cite

Attention-related activity during episodic memory retrieval: a cross-function fMRI study.

Journal Article Neuropsychologia · January 2003 In functional neuroimaging studies of episodic retrieval (ER), activations in prefrontal, parietal, anterior cingulate, and thalamic regions are typically attributed to episodic retrieval processes. However, these activations are also frequent during visua ... Full text Cite

Functional neuroimaging of memory.

Journal Article Neuropsychologia · January 2003 Full text Cite

Aging gracefully: compensatory brain activity in high-performing older adults.

Journal Article NeuroImage · November 2002 Whereas some older adults show significant cognitive deficits, others perform as well as young adults. We investigated the neural basis of these different aging patterns using positron emission tomography (PET). In PET and functional MRI (fMRI) studies, pr ... Full text Cite

Hemispheric asymmetry and aging: right hemisphere decline or asymmetry reduction.

Journal Article Neuroscience and biobehavioral reviews · November 2002 We review evidence for two models of hemispheric asymmetry and aging: the right hemi-aging model, which proposes that the right hemisphere shows greater age-related decline than the left hemisphere, and the hemispheric asymmetry reduction in old adults (HA ... Full text Cite

Event-related potentials of emotional memory: encoding pleasant, unpleasant, and neutral pictures.

Journal Article Cognitive, affective & behavioral neuroscience · September 2002 Emotional events tend to be remembered better than nonemotional events. We investigated this phenomenon by measuring two event-related potential (ERP) effects: the emotion effect (more positive ERPs for pleasant or unpleasant stimuli than for neutral stimu ... Full text Cite

Similarities and differences in the neural correlates of episodic memory retrieval and working memory.

Journal Article NeuroImage · June 2002 Functional neuroimaging studies have shown that different cognitive functions activate overlapping brain regions. An activation overlap may occur because a region is involved in operations tapped by different cognitive functions or because the activated ar ... Full text Cite

Brain imaging of human memory systems: between-systems similarities and within-system differences.

Journal Article Brain research. Cognitive brain research · April 2002 There is much evidence for the existence of multiple memory systems. However, it has been argued that tasks assumed to reflect different memory systems share basic processing components and are mediated by overlapping neural systems. Here we used multivari ... Full text Cite

Hemispheric asymmetry reduction in older adults: the HAROLD model.

Journal Article Psychology and aging · March 2002 A model of the effects of aging on brain activity during cognitive performance is introduced. The model is called HAROLD (hemispheric asymmetry reduction in older adults), and it states that, under similar circumstances, prefrontal activity during cognitiv ... Full text Cite

Cognitive neuroscience of aging: contributions of functional neuroimaging.

Journal Article Scandinavian journal of psychology · July 2001 By revealing how brain activity during cognitive performance changes as a function of aging, studies using positron emission tomography (PET) and functional magnetic resonance imaging (fMRI) are contributing to the development of a new discipline of Cognit ... Full text Cite

Comparative electrophysiological and hemodynamic measures of neural activation during memory-retrieval.

Journal Article Human brain mapping · June 2001 The spatial and temporal characteristics of the brain processes underlying memory retrieval were studied with both event-related potentials (ERP) and positron emission tomography (PET) techniques. Subjects studied lists of 20 words and then performed episo ... Full text Cite

Dissociating the neural correlates of item and context memory: an ERP study of face recognition.

Journal Article Canadian journal of experimental psychology = Revue canadienne de psychologie experimentale · June 2001 We investigated the neural correlates of item and context retrieval using event-related potentials (ERPs). Participants studied unfamiliar faces with happy or neutral expressions, and at test, they decided whether test faces were studied in the same or in ... Full text Cite

Can medial temporal lobe regions distinguish true from false? An event-related functional MRI study of veridical and illusory recognition memory.

Journal Article Proceedings of the National Academy of Sciences of the United States of America · April 2001 To investigate the types of memory traces recovered by the medial temporal lobe (MTL), neural activity during veridical and illusory recognition was measured with the use of functional MRI (fMRI). Twelve healthy young adults watched a videotape segment in ... Full text Cite

Event-related potentials of recognizing happy and neutral faces.

Journal Article Neuroreport · February 2001 In event-related potentials (ERPs) studies, recognition memory is associated with two positivities: one over parietal regions, and one over frontal regions. With nameable neutral stimuli, such as words or common objects, the parietal effect is usually left ... Full text Cite

Estimating the frequency of nonevents: the role of recollection failure in false recognition.

Journal Article Psychonomic bulletin & review · December 2000 Participants studied lists of multiply presented converging associates (e.g., bed, dream, pillow, etc.) and were timed as they estimated how often they saw list items, related foils (e.g., blanket), and nonpresented critical items (SLEEP). Average number o ... Full text Cite

Features are also important: contributions of featural and configural processing to face recognition.

Journal Article Psychological science · September 2000 It has been suggested that face recognition is primarily based on configural information, with featural information playing little or no role. We investigated this idea by comparing the prototype effect for face prototypes that emphasized either featural o ... Full text Cite

The effects of divided attention on encoding- and retrieval-related brain activity: A PET study of younger and older adults.

Journal Article Journal of cognitive neuroscience · September 2000 Divided attention (DA) disrupts episodic encoding, but has little effect on episodic retrieval. Furthermore, normal aging is associated with episodic memory impairments, and when young adults are made to encode information under DA conditions, their memory ... Full text Cite

Neural bases of learning and memory: functional neuroimaging evidence.

Journal Article Current opinion in neurology · August 2000 Positron emission tomography and functional magnetic resonance imaging studies have identified brain regions associated with different forms of memory. Working memory has been associated primarily with the bilateral prefrontal and parietal regions; semanti ... Full text Cite

The effect of divided attention on encoding and retrieval in episodic memory revealed by positron emission tomography.

Journal Article Journal of cognitive neuroscience · March 2000 The effects of divided attention (DA) on episodic memory encoding and retrieval were investigated in 12 normal young subjects by positron emission tomography (PET). Cerebral blood flow was measured while subjects were concurrently performing a memory task ... Full text Cite

[Visual synthesis of speech].

Journal Article Anales del sistema sanitario de Navarra · January 2000 The eyes can come to be the sole tool of communication for highly disabled patients. With the appropriate technology it is possible to successfully interpret eye movements, increasing the possibilities of patient communication with the use of speech synthe ... Full text Cite

Imaging cognition II: An empirical review of 275 PET and fMRI studies.

Journal Article Journal of cognitive neuroscience · January 2000 Positron emission tomography (PET) and functional magnetic resonance imaging (fMRI) have been extensively used to explore the functional neuroanatomy of cognitive functions. Here we review 275 PET and fMRI studies of attention (sustained, selective, Stroop ... Full text Cite

Age-related differences in neural activity during item and temporal-order memory retrieval: a positron emission tomography study.

Journal Article Journal of cognitive neuroscience · January 2000 Positron emission tomography (PET) was used to investigate the hypothesis that older adults' difficulties with temporal-order memory are related to deficits in frontal function. Young (mean 24.7 years) and old (mean 68.6 years) participants studied a list ... Full text Cite

Large scale neurocognitive networks underlying episodic memory.

Journal Article Journal of cognitive neuroscience · January 2000 Large-scale networks of brain regions are believed to mediate cognitive processes, including episodic memory. Analyses of regional differences in brain activity, measured by functional neuroimaging, have begun to identify putative components of these netwo ... Full text Cite

Age-related changes in regional cerebral blood flow associated with item and temporal-order memory retrieval

Journal Article Brain and Cognition · December 1, 1999 Young and older adults studied a word list and were then PET scanned while retrieving information about what words were in the list (item retrieval) or when words occurred within the list (temporal-order retrieval). There were three main findings. First, y ... Cite

False memories and semantic lexicon arrangement.

Journal Article Brain and language · June 1999 A description of semantic lexicon arrangement is a central goal in examinations of language processing. There are a number of ways in which this description has been cast and a host of different mechanisms in place for providing operational descriptions (e ... Full text Cite

Task-related and item-related brain processes of memory retrieval.

Journal Article Proceedings of the National Academy of Sciences of the United States of America · February 1999 In all cognitive tasks, general task-related processes operate throughout a given task on all items, whereas specific item-related processes operate differentially on individual items. In typical functional neuroimaging experiments, these two sets of proce ... Full text Cite

The prototype effect in face recognition: extension and limits.

Journal Article Memory & cognition · January 1999 The prototype effect in face recognition refers to a tendency to recognize the face corresponding to the central value of a series of seen faces, even when this central value or prototype has not been seen. Five experiments investigated the extension and l ... Full text Cite

Task- and Item-Related Processes in Memory Retrieval: A Combined PET and ERP Study

Journal Article Proceedings of the National Academy of Sciences USA · 1999 Cite

Analysis of neural interactions explains the activation of occipital cortex by an auditory stimulus.

Journal Article Journal of neurophysiology · November 1998 Analysis of neural interactions explains the activation of occipital cortex by an auditory stimulus. J. Neurophysiol. 80: 2790-2796, 1998. Large-scale neural interactions were characterized in human subjects as they learned that an auditory stimulus signal ... Full text Cite

Asymmetric frontal activation during episodic memory: what kind of specificity?

Journal Article Trends in cognitive sciences · November 1998 Full text Cite

Convergence of neural systems processing stimulus associations and coordinating motor responses.

Journal Article Cerebral cortex (New York, N.Y. : 1991) · October 1998 A sensory-sensory learning paradigm was used to measure neural changes in humans during acquisition of an association between an auditory and visual stimulus. Three multivariate partial least-squares (PLS) analyses of positron emission tomography data iden ... Full text Cite

Episodic memory and the self in a case of isolated retrograde amnesia.

Journal Article Brain : a journal of neurology · October 1998 Isolated retrograde amnesia is defined as impaired recollection of experiences pre-dating brain injury with relatively preserved anterograde learning and memory. We present findings from a patient (M.L.) with isolated retrograde amnesia following severe tr ... Full text Cite

Computational synthesis of arbitrary floating impedances

Journal Article International Journal of Circuit Theory and Applications · September 1, 1998 An algorithm for the synthesis of immittances is briefly described. Given a driving point immittance function and specifying the number of nodes, the algorithm will generate all the networks fulfilling the specified function with the predetermined number o ... Full text Cite

Cautionary note on stability of current conveyor-based circuits

Journal Article International Journal of Circuit Theory and Applications · March 1, 1998 The current conveyor-based circuits have many resemblances to ones built-up with operational amplifiers. In the latter, the feedback resistor has a lower bound to assure stability, while in the former, it is the load resistor which is limited by an upper b ... Full text Cite

Age-related differences in effective neural connectivity during encoding and recall.

Journal Article Neuroreport · November 1997 Age-related differences in brain activity may reflect local neural changes in the regions involved or they may reflect a more global transformation of brain function. To investigate this issue, we applied structural equation modeling to the results of a po ... Full text Cite

Brain regions differentially involved in remembering what and when: a PET study.

Journal Article Neuron · October 1997 Recollecting a past episode involves remembering not only what happened but also when it happened. We used positron emission tomography (PET) to directly contrast the neural correlates of item and temporalorder memory. Subjects studied a list of words and ... Full text Cite

Investigating the relation between imagery and perception: evidence from face priming.

Journal Article The Quarterly journal of experimental psychology. A, Human experimental psychology · May 1997 The relation between imagery and perception was investigated in face priming. Two experiments are reported in which subjects either saw or imagined the faces of celebrities. They were later given a speeded perceptual test (familiarity judgement to pictures ... Full text Cite

Functional Neuroanatomy of Recall and Recognition: A PET Study of Episodic Memory.

Journal Article Journal of cognitive neuroscience · March 1997 The purpose of this study was to directly compare the brain regions involved in episodic-memory recall and recognition. Changes in regional cerebral blood flow were measured by positron emission tomography while young healthy test persons were either recog ... Full text Cite

A course on instrumentation: The signal processing approach

Conference Conference Record - IEEE Instrumentation and Measurement Technology Conference · January 1, 1997 This paper describes a new course on Instrumentation given to Telecommunications Engineering students at the Universidad Publica de Navarra. This course has been introduced within the context of the renovation of curricula in Spain, in which instrumentatio ... Full text Cite

Imaging Cognition: An Empirical Review of PET Studies with Normal Subjects.

Journal Article Journal of cognitive neuroscience · January 1997 We review PET studies of higher-order cognitive processes, including attention (sustained and selective), perception (of objects, faces, and locations), language (word listening, reading, and production), working memory (phonological and visuo-spatial), se ... Full text Cite

Age-related differences in neural activity during memory encoding and retrieval: a positron emission tomography study.

Journal Article The Journal of neuroscience : the official journal of the Society for Neuroscience · January 1997 Positron emission tomography (PET) was used to compare regional cerebral blood flow (rCBF) in young (mean 26 years) and old (mean 70 years) subjects while they were encoding, recognizing, and recalling word pairs. A multivariate partial-least-squares (PLS) ... Full text Cite

Functional and structural neuroimaging correlates of selective retrograde amnesia: A case study with MRI and PET

Journal Article Brain and Cognition · 1997 The neuroanatomical and neurophysiological systems underlying episodic memory functioning were assessed in a case of retrograde amnesia without anterograde amnesia following traumatic brain injury (TBI). MRI showed evidence of a focal right inferior fronta ... Cite

The neural correlates of intentional learning of verbal materials: a PET study in humans.

Journal Article Brain research. Cognitive brain research · November 1996 The purpose of this study was to identify the brain regions invoked when subjects attempt to learn verbal materials for a subsequent memory test. Twelve healthy subjects undertook two different tasks: reading and encoding of word pairs, while they were bei ... Full text Cite

General and specific brain regions involved in encoding and retrieval of events: what, where, and when.

Journal Article Proceedings of the National Academy of Sciences of the United States of America · October 1996 Remembering an event involves not only what happened, but also where and when it occurred. We measured regional cerebral blood flow by positron emission tomography during initial encoding and subsequent retrieval of item, location, and time information. Mu ... Full text Cite

Network analysis of positron emission tomography regional cerebral blood flow data: ensemble inhibition during episodic memory retrieval.

Journal Article The Journal of neuroscience : the official journal of the Society for Neuroscience · June 1996 Two important objectives in the neuroscience of memory are (1) identification of neural pathways involved in memory processes; and (2) characterization of the pattern of interactions between these pathways. Functional neuroimaging can contribute to both of ... Full text Cite

PET studies of encoding and retrieval: The HERA model.

Journal Article Psychonomic bulletin & review · June 1996 We review positron emission tomography (PET) studies whose results converge on the hemispheric encoding/retrieval asymmetry (HERA) model of the involvement of prefrontal cortical regions in the processes of human memory. The model holds that the left prefr ... Full text Cite

Analog universal active device: theory, design and applications

Conference Proceedings of the International Conference on Microelectronics · December 1, 1995 This paper introduces the concept of what we call analog Universal Active Device (UAD), as an step forward from Operational Amplifiers and other recently proposed active devices. The model of such device is proposed together with an approach to obtain seve ... Cite

Functional brain maps of retrieval mode and recovery of episodic information.

Journal Article Neuroreport · December 1995 Positron emission tomography (PET) was used to identify brain regions associated with two component processes of episodic retrieval; those related to thinking back in subjective time (retrieval mode) and those related to actual recovery of stored informati ... Cite

Investigating the mixture and subdivision of perceptual and conceptual processing in Japanese memory tests.

Journal Article Memory & cognition · March 1995 The dual nature of the Japanese writing system was used to investigate two assumptions of the processing view of memory transfer: (1) that both perceptual and conceptual processing can contribute to the same memory test (mixture assumption) and (2) that bo ... Full text Cite

On the search for a 'universal' active element

Conference Proceedings - IEEE International Symposium on Circuits and Systems · December 1, 1994 In this paper we summarize the necessary properties that a nullor conceived to be a universal active device, must have. This approach lead us to propose a practical implementation of a nullor, consisting in a four terminal, fully floating transconductor wi ... Cite

A dissociation between two implicit conceptual tests supports the distinction between types of conceptual processing.

Journal Article Psychonomic bulletin & review · December 1994 Subjects studied words in a classification task (to what categories does it belong?) or in a production task (producing associates to the word) and then completed one of two implicit memory tests-category association or free association. The classification ... Full text Cite

Unified approach to the implementations of universal active devices

Journal Article Electronics Letters · October 13, 1994 A unified approach to the generation of practical implementations of a universal active device is proposed. In this way previously independent works can be seen from a unified perspective. SPICE simulations are presented of bipolar versions of the differen ... Full text Cite

Dissociating conceptual priming, perceptual priming and explicit memory

Journal Article European Journal of Cognitive Psychology · March 1, 1993 A distinction has recently been drawn between two forms of implicit tests, one sensitive to perceptual factors (implicit perceptual tests) and another sensitive to semantic factors (implicit conceptual tests). In two experiments, we examined the statistica ... Full text Cite

A New Method for Low-Capacitance Probing

Journal Article IEEE Transactions on Instrumentation and Measurement · January 1, 1993 In this paper a method is suggested to cancel the input capacitance of instruments and probes used in measurements. This is proposed as an alternative to conventional attenuating passive and active probes. The idea is demonstrated with a practical device t ... Full text Cite