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Titolo:
Left anterior prefrontal activation increases with demands to recall specific perceptual information
Autore:
Ranganath, C; Johnson, MK; DEsposito, M;
Indirizzi:
Univ Calif Berkeley, Dept Psychol, Berkeley, CA 94720 USA Univ Calif Berkeley Berkeley CA USA 94720 Psychol, Berkeley, CA 94720 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 Yale Univ, Dept Psychol, New Haven, CT 06520 USA Yale Univ New Haven CT USA 06520 v, Dept Psychol, New Haven, CT 06520 USA
Titolo Testata:
JOURNAL OF NEUROSCIENCE
fascicolo: 22, volume: 20, anno: 2000,
pagine: NIL_11 - NIL_15
SICI:
0270-6474(20001115)20:22<NIL_11:LAPAIW>2.0.ZU;2-0
Fonte:
ISI
Lingua:
ENG
Soggetto:
EVENT-RELATED FMRI; MEMORY RETRIEVAL; EPISODIC MEMORY; FUNCTIONAL MRI; WORKING-MEMORY; CORTEX; RECOGNITION; HYPOTHESIS;
Keywords:
prefrontal cortex; frontal lobes; episodic memory; source monitoring; event-related fMRI; neuroimaging;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
25
Recensione:
Indirizzi per estratti:
Indirizzo: Ranganath, C Univ Calif Berkeley, Dept Psychol, 3210 Tolman Hall, Berkeley, CA 94720 USA Univ Calif Berkeley 3210 Tolman Hall Berkeley CA USA 94720 SA
Citazione:
C. Ranganath et al., "Left anterior prefrontal activation increases with demands to recall specific perceptual information", J NEUROSC, 20(22), 2000, pp. NIL_11-NIL_15

Abstract

Results from neuroimaging studies have led to competing theories regardingthe contributions of prefrontal regions to memory formation and retrieval. To investigate this issue, we used event-related functional magnetic resonance imaging to assess prefrontal activation during encoding and retrieval of pictures of objects. Responses to studied and unstudied objects at retrieval were compared between two tests with differing demands for the specificity of information to be retrieved (source vs old-new recognition). Results showed that bilateral ventral [Brodmann's areas (BA) 44, 45, and 47] and right dorsal (BA 9) prefrontal regions were activated during both encoding and retrieval, but activity in these regions was not reliably modulated by the specificity of information to be retrieved. A region in left anterior prefrontal cortex (BA 10/46) was reliably activated during retrieval trials,and activation in this region increased with demands to retrieve perceptually detailed information about studied objects. Our results show that left anterior prefrontal cortex is engaged during the monitoring and evaluation of specific memory characteristics at retrieval-a process critical for accurate episodic remembering.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 08/04/20 alle ore 09:14:14