Immediate memory for "when, where and what": Short-delay retrieval using dynamic naturalistic material.
Journal Article (Journal Article)
We investigated the neural correlates supporting three kinds of memory judgments after very short delays using naturalistic material. In two functional magnetic resonance imaging (fMRI) experiments, subjects watched short movie clips, and after a short retention (1.5-2.5 s), made mnemonic judgments about specific aspects of the clips. In Experiment 1, subjects were presented with two scenes and required to either choose the scene that happened earlier in the clip ("scene-chronology"), or with a correct spatial arrangement ("scene-layout"), or that had been shown ("scene-recognition"). To segregate activity specific to seen versus unseen stimuli, in Experiment 2 only one probe image was presented (either target or foil). Across the two experiments, we replicated three patterns underlying the three specific forms of memory judgment. The precuneus was activated during temporal-order retrieval, the superior parietal cortex was activated bilaterally for spatial-related configuration judgments, whereas the medial frontal cortex during scene recognition. Conjunction analyses with a previous study that used analogous retrieval tasks, but a much longer delay (>1 day), demonstrated that this dissociation pattern is independent of retention delay. We conclude that analogous brain regions mediate task-specific retrieval across vastly different delays, consistent with the proposal of scale-invariance in episodic memory retrieval.
Full Text
Duke Authors
Cited Authors
- Kwok, SC; Macaluso, E
Published Date
- July 2015
Published In
Volume / Issue
- 36 / 7
Start / End Page
- 2495 - 2513
PubMed ID
- 25773646
Pubmed Central ID
- PMC5006857
Electronic International Standard Serial Number (EISSN)
- 1097-0193
International Standard Serial Number (ISSN)
- 1065-9471
Digital Object Identifier (DOI)
- 10.1002/hbm.22787
Language
- eng