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Titolo:
Early and late components of visual categorization: an event-related potential study
Autore:
Antal, A; Szabolcs, K; Kovacs, G; Janka, Z; Benedek, G;
Indirizzi:
Albert Szent Gyorgyi Med Univ, Dept Physiol, H-6720 Szeged, Hungary AlbertSzent Gyorgyi Med Univ Szeged Hungary H-6720 6720 Szeged, Hungary Albert Szent Gyorgyi Med Univ, Dept Psychiat, H-6720 Szeged, Hungary Albert Szent Gyorgyi Med Univ Szeged Hungary H-6720 6720 Szeged, Hungary
Titolo Testata:
COGNITIVE BRAIN RESEARCH
fascicolo: 1, volume: 9, anno: 2000,
pagine: 117 - 119
SICI:
0926-6410(200001)9:1<117:EALCOV>2.0.ZU;2-3
Fonte:
ISI
Lingua:
ENG
Keywords:
event-related potential; N1; P2; N2; categorization; visual processing; natural scene;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
7
Recensione:
Indirizzi per estratti:
Indirizzo: Antal, A Albert Szent Gyorgyi Med Univ, Dept Physiol, POB 1192, H-6720 Szeged, Hungary Albert Szent Gyorgyi Med Univ POB 1192 Szeged Hungary H-6720 ary
Citazione:
A. Antal et al., "Early and late components of visual categorization: an event-related potential study", COGN BRAIN, 9(1), 2000, pp. 117-119

Abstract

We examined the characteristics of early and late components of event-related potentials (ERPs) accompanying the visual categorization of natural scenes. In the first experiment, ERPs were recorded in an animal-non-animal categorization task (CT), whereas the second experiment included a spatial frequency discrimination task (DT). In the CT, there were more negative potentials for non-animals in the time windows of 150-250 ms (N1) and 350-500 ms(N2), and a more positive potential for animals in the time window of 250-350 ms (P2). In the DT, spatial frequency gratings evoked only a short-duration difference N1 at the frontal sites. Our results suggest that N1 may berelated to higher-level categorization processes. (C) 2000 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 07/07/20 alle ore 18:10:12