Publikation: Modulation of induced gamma band activity in the human EEG by attention and visual information processing
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Here we present a series of four studies aimed to investigate the link between induced gamma band activity in the human EEG and visual information processing. We demonstrated and validated the modulation of spectral gamma band power by spatial selective visual attention. When subjects attended to a certain stimulus, spectral power was increased as compared to when the same stimulus was ignored. In addition, we showed a shift in spectral gamma band power increase to the contralateral hemisphere when subjects shifted their attention to one visual hemifield. The following study investigated induced gamma band activity and the perception of a Gestalt. Ambiguous rotating figures were used to operationalize the law of good figure (gute Gestalt). We found increased gamma band power at posterior electrode sites when subjects perceived an object. In the last experiment we demonstrated a differential hemispheric gamma band activation when subjects were confronted with emotional pictures. Results of the present experiments in combination with other studies presented in this volume are supportive for the notion that induced gamma band activity in the human EEG is closely related to visual information processing and attentional perceptual mechanisms.
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MÜLLER, Matthias M., Thomas GRUBER, Andreas KEIL, 2000. Modulation of induced gamma band activity in the human EEG by attention and visual information processing. In: International Journal of Psychophysiology. 2000, 38(3), pp. 283-299. Available under: doi: 10.1016/S0167-8760(00)00171-9BibTex
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doi={10.1016/S0167-8760(00)00171-9},
title={Modulation of induced gamma band activity in the human EEG by attention and visual information processing},
number={3},
volume={38},
journal={International Journal of Psychophysiology},
pages={283--299},
author={Müller, Matthias M. and Gruber, Thomas and Keil, Andreas}
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<dcterms:abstract xml:lang="eng">Here we present a series of four studies aimed to investigate the link between induced gamma band activity in the human EEG and visual information processing. We demonstrated and validated the modulation of spectral gamma band power by spatial selective visual attention. When subjects attended to a certain stimulus, spectral power was increased as compared to when the same stimulus was ignored. In addition, we showed a shift in spectral gamma band power increase to the contralateral hemisphere when subjects shifted their attention to one visual hemifield. The following study investigated induced gamma band activity and the perception of a Gestalt. Ambiguous rotating figures were used to operationalize the law of good figure (gute Gestalt). We found increased gamma band power at posterior electrode sites when subjects perceived an object. In the last experiment we demonstrated a differential hemispheric gamma band activation when subjects were confronted with emotional pictures. Results of the present experiments in combination with other studies presented in this volume are supportive for the notion that induced gamma band activity in the human EEG is closely related to visual information processing and attentional perceptual mechanisms.</dcterms:abstract>
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