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Titolo:
The effect of encoding strategy on the neural correlates of memory for faces
Autore:
Bernstein, LJ; Beig, S; Siegenthaler, AL; Grady, CL;
Indirizzi:
Univ Toronto, Baycrest Ctr Geriatr Care, Rotman Res Inst, Toronto, ON M6A 2E1, Canada Univ Toronto Toronto ON Canada M6A 2E1 Inst, Toronto, ON M6A 2E1, Canada
Titolo Testata:
NEUROPSYCHOLOGIA
fascicolo: 1, volume: 40, anno: 2002,
pagine: 86 - 98
SICI:
0028-3932(2002)40:1<86:TEOESO>2.0.ZU;2-O
Fonte:
ISI
Lingua:
ENG
Soggetto:
POSITRON-EMISSION TOMOGRAPHY; CEREBRAL BLOOD-FLOW; HUMAN EXTRASTRIATE CORTEX; PARTIAL LEAST-SQUARES; HUMAN FUSIFORM GYRUS; AGE-RELATED-CHANGES; EPISODIC MEMORY; WORKING-MEMORY; STIMULUS-FAMILIARITY; RECOGNITION MEMORY;
Keywords:
memory; neuroimaging; human; cognition; prefrontal; fusiform;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Social & Behavioral Sciences
Life Sciences
Citazioni:
65
Recensione:
Indirizzi per estratti:
Indirizzo: Grady, CL Univ Toronto, Baycrest Ctr Geriatr Care, Rotman Res Inst, 3560 Bathurst St, Toronto, ON M6A 2E1, Canada Univ Toronto 3560 Bathurst St Toronto ON Canada M6A 2E1 , Canada
Citazione:
L.J. Bernstein et al., "The effect of encoding strategy on the neural correlates of memory for faces", NEUROPSYCHO, 40(1), 2002, pp. 86-98

Abstract

Encoding and recognition of unfamiliar faces in young adults were examinedusing positron emission tomography to determine whether different encodingstrategies would lead to encoding/retrieval differences in brain activity. Three types of encoding were compared: a 'deep' task (judging pleasantness/unpleasantness), a 'shallow' task (judging right,;left orientation), and an intentional learning task in which subjects were instructed to learn the faces for a subsequent memory test but were not provided with a specific strategy. Memory for all faces was tested with an old/new recognition test. Amodest behavioral effect was obtained, with deeply-encoded faces being recognized more accurately than shallowly-encoded or intent ion al ly-learned faces. Regardless of encoding strategy, encoding activated a primarily ventral system including bilateral temporal and fusiform regions and left prefrontal cortices, whereas recognition activated a primarily dorsal set of regions including right prefrontal and parietal areas. Within encoding, the type of strategy produced different brain activity patterns,,vith deep encoding being characterized by left amygdala and left anterior cingulate activation. There was no effect of encoding strategy on brain activity during the recognition conditions. Posterior fusiform gyrus activation was related to better recognition accuracy in those conditions encouraging perceptual strategies, whereas activity in left frontal and temporal areas correlated withbetter performance during the 'deep' condition. Results highlight three important aspects of face memory: (1) the effect of encoding strategy was seen only at encoding and not at recognition; (2) left inferior prefrontal cortex was engaged during encoding of faces regardless of strategy; and (3) differential activity in fusiform gyrus was found, suggesting that activity in this area is not only a result of automatic face processing but is modulated by controlled processes. (C) 2001 Elsevier Science Ltd. All rights reserved.

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Documento generato il 25/01/20 alle ore 19:33:07