Category-specific cortical activity precedes retrieval during memory search.

by: SM Polyn, VS Natu, JD Cohen, KA Norman

Science, Vol. 310, No. 5756. (23 December 2005), pp. 1963-1966.

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Abstract

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.

@article{Polyn:2005:retrieval, abstract = {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.}, address = {Department of Psychology, University of Pennsylvania, Philadelphia, PA 19104, USA. polyn@psych.upenn.edu}, author = {Polyn, S. M. and Natu, V. S. and Cohen, J. D. and Norman, K. A. }, citeulike-article-id = {556485}, doi = {10.1126/science.1117645}, issn = {1095-9203}, journal = {Science}, keywords = {memory, methods, semantics}, month = {December}, number = {5756}, pages = {1963--1966}, posted-at = {2008-04-23 18:20:30}, priority = {0}, title = {Category-specific cortical activity precedes retrieval during memory search.}, url = {http://dx.doi.org/10.1126/science.1117645}, volume = {310}, year = {2005} }

RIS record

TY - JOUR ID - Polyn:2005:retrieval L3 - citeulike-article-id:556485 TI - Category-specific cortical activity precedes retrieval during memory search. JF - Science VL - 310 IS - 5756 SP - 1963 EP - 1966 AD - Department of Psychology, University of Pennsylvania, Philadelphia, PA 19104, USA. polyn@psych.upenn.edu SN - 1095-9203 N2 - 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. KW - memory KW - methods KW - semantics AU - Polyn, SM AU - Natu, VS AU - Cohen, JD AU - Norman, KA PY - 2005/12/23/ UR - http://dx.doi.org/10.1126/science.1117645 ER -

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