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Titolo:
Activity in fusiform face area modulated as a function of working memory load
Autore:
Druzgal, TJ; DEsposito, M;
Indirizzi:
Univ Penn, Dept Neurosci, Philadelphia, PA 19104 USA Univ Penn Philadelphia PA USA 19104 Neurosci, Philadelphia, PA 19104 USA Univ Calif Berkeley, Helen Wills Neurosci Inst, Berkeley, CA 94720 USA Univ Calif Berkeley Berkeley CA USA 94720 ci Inst, Berkeley, CA 94720 USA Univ Calif Berkeley, Dept Psychol, Berkeley, CA 94720 USA Univ Calif Berkeley Berkeley CA USA 94720 Psychol, Berkeley, CA 94720 USA
Titolo Testata:
COGNITIVE BRAIN RESEARCH
fascicolo: 3, volume: 10, anno: 2001,
pagine: 355 - 364
SICI:
0926-6410(200101)10:3<355:AIFFAM>2.0.ZU;2-F
Fonte:
ISI
Lingua:
ENG
Soggetto:
INFERIOR TEMPORAL CORTEX; HUMAN EXTRASTRIATE CORTEX; SHORT-TERM-MEMORY; PREFRONTAL CORTEX; INFEROTEMPORAL CORTEX; NEURAL MECHANISMS; BRAIN ACTIVATION; VISUAL-SEARCH; NEURONS; FMRI;
Keywords:
working memory; fMRI; fusiform gyrus; prefrontal cortex; face; neuroimaging;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
52
Recensione:
Indirizzi per estratti:
Indirizzo: Druzgal, TJ Univ Penn, Dept Neurosci, Philadelphia, PA 19104 USA Univ Penn Philadelphia PA USA 19104 hiladelphia, PA 19104 USA
Citazione:
T.J. Druzgal e M. D'Esposito, "Activity in fusiform face area modulated as a function of working memory load", COGN BRAIN, 10(3), 2001, pp. 355-364

Abstract

Previous fMRI results suggest that extrastriate visual areas have a predominant role in perceptual processing while the prefrontal cortex (PFC) has apredominant role in working memory. In contrast, single-unit recording studies in monkeys have demonstrated a relationship between extrastriate visual areas and visual working memory tasks. In this study we tested whether activity in both the PFC and fusiform Face area (FFA) changed with increasingdemands of an n-back task for gray-scale faces, Since stimulus presentation was identical across conditions, the n-back task allowed us to parametrically vary working memory demands across conditions while holding perceptualand motor demands constant. This study replicated the result of PFC areas of activation that increased directly with load n of the task. The novel finding in all subjects was FFA activation that also increased directly with load n of the task. Since perceptual demands were equivalent across the three task conditions, these findings suggest that activity in both the PFC and the FFA vary with face working memory demands. (C) 2001 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 19/01/20 alle ore 00:27:38