Event-related changes of background electroencephalogram during contingent negative variation paradigm |
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| Authors: | TOSHIKI MATSUOKA MD MICHIHIKO NAKAMURA MD KUNIO KANO MD TAKUJI YAMAMOTO MD KYOKO NISHIHARA MD YASUHIKO SAITO MD TERUO NAKAJIMA MD |
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| Affiliation: | Department of Psychiatry, Kyoto Prefectural University of Medicine, Kyoto;Department of Psychophysiology, Tokyo Institute of Psychiatry, Tokyo;Department of Industrial and Systems Engineering, Ashikaga Institute of Technology, Tochigi, Japan |
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| Abstract: | Abstract The autoregressive model was applied to the background electroencephalogram during the tone(S1)-tone(S2)-respond contingent negative variation paradigm under eyes-open condition. The EEG data were obtained at the scalp sites of Fz, Cz, and Pz in seven normal males. During the first half of the interstimulus interval (ISI) of 2.5 s, Fz-dominant excitatory process was suggested in concordance with an orienting response to stimulus 1. In the second half of the ISI, Pz-dominant inhibitory process was considered. The stimulus 2 presentation and the required motor response promoted the Pz-dominant process. |
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| Keywords: | autoregressive model cortical activation event-related desynchronization. |
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