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Titolo:
VISUALLY INDUCED GAMMA-BAND RESPONSES IN THE HUMAN EEG - EXPRESSION OF CORTICAL STIMULUS REPRESENTATION
Autore:
MULLER MM; ELBERT T; ROCKSTROH B;
Indirizzi:
UNIV KONSTANZ,FACHGRP PSYCHOL,POSTFACH 5560 D-78434 CONSTANCE GERMANY
Titolo Testata:
Zeitschrift fur experimentelle Psychologie
fascicolo: 1, volume: 44, anno: 1997,
pagine: 186 - 212
SICI:
0949-3964(1997)44:1<186:VIGRIT>2.0.ZU;2-I
Fonte:
ISI
Lingua:
GER
Soggetto:
OSCILLATORY NEURONAL RESPONSES; CAT STRIATE CORTEX; RECEPTIVE-FIELD; AWAKE MACAQUE; MONKEY; SYNCHRONIZATION; BRAIN; CELLS; AREAS;
Keywords:
INDUCED GAMMA BAND RESPONSE; VISUAL CORTEX; BINDING PROBLEM; HUMAN EEG; DISCRETE GABOR TRANSFORMATION;
Tipo documento:
Article
Natura:
Periodico
Citazioni:
56
Recensione:
Indirizzi per estratti:
Citazione:
M.M. Muller et al., "VISUALLY INDUCED GAMMA-BAND RESPONSES IN THE HUMAN EEG - EXPRESSION OF CORTICAL STIMULUS REPRESENTATION", Zeitschrift fur experimentelle Psychologie, 44(1), 1997, pp. 186-212

Abstract

The features of a visual stimulus are processed in different regions of the visual cortex with no direct axonal connections. Therefore, neurons in the distributed processing areas must be connected in some wayto form the physiological substrate of the percept. On the basis of theoretical considerations and animal experiments, it has been proposedthat synchronization of neuronal oscillatory firing patterns in the gamma band range (above 30 Hz) might be essential in linking the anatomically distant cell assemblies that represent the various features of the stimulus. The present work reports on three experiments in which the functional relevance of induced gamma band responses were investigated in the human EEG. Using an identical stimulation design, as used in animal studies, it was demonstrated that human induced gamma band responses resembled those reported from intracortical recordings from animals. It was further shown that alpha and gamma band activities differed in temporal characteristics as well as in topographical features, indicating the representation of different cortical functional states. In accordance with previous animal and human experimental findings, acomplex moving stimulus was related to a suppression of induced gammaband activity as opposed to a standing complex stimulus.

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Documento generato il 21/09/20 alle ore 15:53:44