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Titolo:
Electrophysiological evidence of a semantic system commonly accessed by animals and tools categories
Autore:
Hinojosa, JA; Martin-Loeches, M; Munoz, F; Casado, P; Fernandez-Frias, C; Pozo, MA;
Indirizzi:
Univ Complutense Madrid, Pluridisciplinary Inst, Brain Mapping Unit, E-28040 Madrid, Spain Univ Complutense Madrid Madrid Spain E-28040 Unit, E-28040 Madrid, Spain Univ Complutense Madrid, Dept Psicobiol, E-28040 Madrid, Spain Univ Complutense Madrid Madrid Spain E-28040 biol, E-28040 Madrid, Spain
Titolo Testata:
COGNITIVE BRAIN RESEARCH
fascicolo: 2, volume: 12, anno: 2001,
pagine: 321 - 328
SICI:
0926-6410(200110)12:2<321:EEOASS>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
EVENT-RELATED POTENTIALS; MODALITY SPECIFICITY; DOUBLE DISSOCIATION; NAMING IMPAIRMENTS; LIVING THINGS; NEURAL BASIS; KNOWLEDGE; RECOGNITION; BRAIN; OBJECT;
Keywords:
event related potential; recognition potential; animal; tool; semantic categorization; visual semantic system;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
56
Recensione:
Indirizzi per estratti:
Indirizzo: Martin-Loeches, M Univ Complutense Madrid, Pluridisciplinary Inst, Brain Mapping Unit, Po Juan XXIIII 1, E-28040 Madrid, Spain Univ Complutense Madrid Po Juan XXIIII 1 Madrid Spain E-28040
Citazione:
J.A. Hinojosa et al., "Electrophysiological evidence of a semantic system commonly accessed by animals and tools categories", COGN BRAIN, 12(2), 2001, pp. 321-328

Abstract

Some theoretical perspectives propose a semantic system in which categories are represented in different brain regions. Others assume that distinctions are based rather on differences in the demands placed by different categories on shared processing systems. In this study semantic categorization processes were investigated using the recognition potential (RP), an event-related brain response that reflects semantic processing, peaks at around 250 ms after stimulus onset and originates in areas subserving perceptual-semantic analyses. Results indicate that the RP shows some degree of sensitivity to categorization processes, but that categories assumed to differ markedly in their processing demands share, to a large extent, a common neural generator. This provides support for the non-categorical view on the organization of the semantic system, though introducing subtle variations, and suggesting the existence of a semantic subsystem specializing in the processing of perceptual-semantic features regardless of the semantic category involved. (C) 2001 Elsevier Science BY. All rights reserved.

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Documento generato il 07/04/20 alle ore 22:27:40