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Titolo:
An event-related potential study of contextual modifications in a face recognition task
Autore:
Guillaume, F; Tiberghien, G;
Indirizzi:
Inst Cognit Sci, F-69675 Bron, France Inst Cognit Sci Bron France F-69675 nst Cognit Sci, F-69675 Bron, France
Titolo Testata:
NEUROREPORT
fascicolo: 6, volume: 12, anno: 2001,
pagine: 1209 - 1216
SICI:
0959-4965(20010508)12:6<1209:AEPSOC>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Soggetto:
POSITRON-EMISSION-TOMOGRAPHY; STIMULUS REPETITION; MEMORY; RECOLLECTION; COMPLEXITY;
Keywords:
contextual modifications; decision processes; ERP; face recognition; old/new effect;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
20
Recensione:
Indirizzi per estratti:
Indirizzo: Guillaume, F Inst Cognit Sci, 67 Blvd Pinel, F-69675 Bron, France Inst Cognit Sci 67 Blvd Pinel Bron France F-69675 on, France
Citazione:
F. Guillaume e G. Tiberghien, "An event-related potential study of contextual modifications in a face recognition task", NEUROREPORT, 12(6), 2001, pp. 1209-1216

Abstract

Event-related potentials (ERP) were recorded during a task involving the short-term recognition of unfamiliar faces. The purpose was to study the effects of changing the intrinsic context (facial expression) and/or the extrinsic context (background) between the encoding and recognition of a face. The new face caused an increase in the parietal N170 amplitude, but this component was not affected by contextual modifications. In contrast, the frontal N200 was very sensitive to context changes. There was also a well-defined, late parietal component modulated by the processing of information relevant to the face recognition decision. This late positive component reached its amplitude peak when the decision criterion was the strictest. The results obtain showed that ERP can be modulated by these context variations eventhough they are irrelevant to the task at hand. NeuroReport 12:1209-1216 (C) 2001 Lippincott Williams & Wilkins.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 22/01/20 alle ore 21:42:46