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

Publication ,  Journal Article
Iidaka, T; Anderson, ND; Kapur, S; Cabeza, R; Craik, FI
Published in: 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 (encoding and retrieval of visually presented word pairs) and an auditory tone-discrimination task. The PET data were analyzed using multivariate Partial Least Squares (PLS), and the results revealed three sets of neural correlates related to specific task contrasts. Brain activity, relatively greater under conditions of full attention (FA) than DA, was identified in the occipital-temporal, medial, and ventral-frontal areas, whereas areas showing relatively more activity under DA than FA were found in the cerebellum, temporo-parietal, left anterior-cingulate gyrus, and bilateral dorsolateral-prefrontal areas. Regions more active during encoding than during retrieval were located in the hippocampus, temporal and the prefrontal cortex of the left hemisphere, and regions more active during retrieval than during encoding included areas in the medial and right-prefrontal cortex, basal ganglia, thalamus, and cuneus. DA at encoding was associated with specific decreases in rCBF in the left-prefrontal areas, whereas DA at retrieval was associated with decreased rCBF in a relatively small region in the right-prefrontal cortex. These different patterns of activity are related to the behavioral results, which showed a substantial decrease in memory performance when the DA task was performed at encoding, but no change in memory levels when the DA task was performed at retrieval.

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Published In

Journal of cognitive neuroscience

DOI

EISSN

1530-8898

ISSN

0898-929X

Publication Date

March 2000

Volume

12

Issue

2

Start / End Page

267 / 280

Related Subject Headings

  • Tomography, Emission-Computed
  • Memory
  • Male
  • Humans
  • Female
  • Experimental Psychology
  • Discrimination, Psychological
  • Cerebrovascular Circulation
  • Brain Mapping
  • Brain
 

Citation

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ICMJE
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Iidaka, T., Anderson, N. D., Kapur, S., Cabeza, R., & Craik, F. I. (2000). The effect of divided attention on encoding and retrieval in episodic memory revealed by positron emission tomography. Journal of Cognitive Neuroscience, 12(2), 267–280. https://doi.org/10.1162/089892900562093
Iidaka, T., N. D. Anderson, S. Kapur, R. Cabeza, and F. I. Craik. “The effect of divided attention on encoding and retrieval in episodic memory revealed by positron emission tomography.Journal of Cognitive Neuroscience 12, no. 2 (March 2000): 267–80. https://doi.org/10.1162/089892900562093.
Iidaka T, Anderson ND, Kapur S, Cabeza R, Craik FI. The effect of divided attention on encoding and retrieval in episodic memory revealed by positron emission tomography. Journal of cognitive neuroscience. 2000 Mar;12(2):267–80.
Iidaka, T., et al. “The effect of divided attention on encoding and retrieval in episodic memory revealed by positron emission tomography.Journal of Cognitive Neuroscience, vol. 12, no. 2, Mar. 2000, pp. 267–80. Epmc, doi:10.1162/089892900562093.
Iidaka T, Anderson ND, Kapur S, Cabeza R, Craik FI. The effect of divided attention on encoding and retrieval in episodic memory revealed by positron emission tomography. Journal of cognitive neuroscience. 2000 Mar;12(2):267–280.
Journal cover image

Published In

Journal of cognitive neuroscience

DOI

EISSN

1530-8898

ISSN

0898-929X

Publication Date

March 2000

Volume

12

Issue

2

Start / End Page

267 / 280

Related Subject Headings

  • Tomography, Emission-Computed
  • Memory
  • Male
  • Humans
  • Female
  • Experimental Psychology
  • Discrimination, Psychological
  • Cerebrovascular Circulation
  • Brain Mapping
  • Brain