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Category-specific cortical activity precedes retrieval during memory search.

Here we describe a functional magnetic resonance imaging study of humans engaged in memory search during a free recall task. Patterns of cortical activity associated with the study of three categories of pictures (faces, locations, and objects) were identified by a pattern-classification algorithm.... Full description

Journal Title: Science (New York N.Y.), December 23, 2005, Vol.310(5756), pp.1963-1966
Main Author: Polyn, Sean M
Other Authors: Natu, Vaidehi S , Cohen, Jonathan D , Norman, Kenneth A
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: E-ISSN: 1095-9203
Link: http://search.proquest.com/docview/68920408/?pq-origsite=primo
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title: Category-specific cortical activity precedes retrieval during memory search.
format: Article
creator:
  • Polyn, Sean M
  • Natu, Vaidehi S
  • Cohen, Jonathan D
  • Norman, Kenneth A
subjects:
  • Adult–Physiology
  • Algorithms–Physiology
  • Brain–Physiology
  • Brain Mapping–Physiology
  • Female–Physiology
  • Form Perception–Physiology
  • Humans–Physiology
  • Magnetic Resonance Imaging–Physiology
  • Male–Physiology
  • Memory–Physiology
  • Mental Recall–Physiology
  • Space Perception–Physiology
ispartof: Science (New York, N.Y.), December 23, 2005, Vol.310(5756), pp.1963-1966
description: Here we describe a functional magnetic resonance imaging study of humans engaged in memory search during a free recall task. Patterns of cortical activity associated with the study of three categories of pictures (faces, locations, and objects) were identified by a pattern-classification algorithm. The algorithm was used to track the reappearance of these activity patterns during the recall period. The reappearance of a given category's activity pattern correlates with verbal recalls made from that category and precedes the recall event by several seconds. This result is consistent with the hypothesis that category-specific activity is cueing the memory system to retrieve studied items. [PUBLICATION ]
language: eng
source:
identifier: E-ISSN: 1095-9203
fulltext: fulltext
issn:
  • 10959203
  • 1095-9203
url: Link


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titleCategory-specific cortical activity precedes retrieval during memory search.
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subjectAdult–Physiology ; Algorithms–Physiology ; Brain–Physiology ; Brain Mapping–Physiology ; Female–Physiology ; Form Perception–Physiology ; Humans–Physiology ; Magnetic Resonance Imaging–Physiology ; Male–Physiology ; Memory–Physiology ; Mental Recall–Physiology ; Space Perception–Physiology
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descriptionHere we describe a functional magnetic resonance imaging study of humans engaged in memory search during a free recall task. Patterns of cortical activity associated with the study of three categories of pictures (faces, locations, and objects) were identified by a pattern-classification algorithm. The algorithm was used to track the reappearance of these activity patterns during the recall period. The reappearance of a given category's activity pattern correlates with verbal recalls made from that category and precedes the recall event by several seconds. This result is consistent with the hypothesis that category-specific activity is cueing the memory system to retrieve studied items. [PUBLICATION ]
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