Category-specific cortical activity precedes retrieval during memory search.
Science
; 310(5756): 1963-6, 2005 Dec 23.
Article
em En
| MEDLINE
| ID: mdl-16373577
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.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Encéfalo
/
Mapeamento Encefálico
/
Memória
Limite:
Adult
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Female
/
Humans
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Male
Idioma:
En
Revista:
Science
Ano de publicação:
2005
Tipo de documento:
Article
País de afiliação:
Estados Unidos