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РЖ ВИНИТИ 34 (BI24) 96.09-04М3.366

Jokeit, H.
Different event-related patterns of 'гамма'-band power in brain waves of fast- and slow-reacting subjects [Text] / H. Jokeit, S. Makeig // Proc. Nat. Acad. Sci. USA. - 1994. - Vol. 91, N 14. - P6339-6343 . - ISSN 0027-8424
Перевод заглавия: Различные по интенсивности участки 'гамма'-полосы мозговых волн у быстро и медленно реагирующих субъектов
Аннотация: Fast- and slow-reacting subjects exhibit different patterns of 'гамма'-band electroencephalogram (EEG) activity when responding as quickly as possible to auditory stimuli. This result appears to confirm long-standing speculations of Wundt that fast- and slow-reacting subjects produce speeded reactions in different ways and demonstrates that analysis of event-related changes in the amplitude of EEG activity recorded from the human scalp can reveal information about event-related brain processes unavailable using event-related potential measures. Time-varying spectral power in a selected (35- to 43-Hz) 'гамма' frequency band was averaged across trials in two experimental conditions: passive listening and speeded reacting to binaural clicks, forming 40-Hz event-related spectral responses. Factor analysis of between-subject event-related spectral response differences split subjects into two near-equal groups composed of faster- and slower-reacting subjects. In faster-reacting subjects, 40-Hz power peaked near 200 ms and 400 ms poststimulus in the react condition, whereas in slower-reacting subjects, 40-Hz power just before stimulus delivery was larger in the react condition. These group differences were preserved in separate averages of relatively long and short reaction-time epochs for each group. 'гамма'-band (20-60 Hz)-filtered event-related potential response averages did not differ between the two groups or conditions. Because of this and because 'гамма'-band power in the auditory event-related potential is small compared with the EEG, the observed event-related spectral response features must represent 'гамма'-band EEG activity reliably induced by, but not phase-locked to, experimental stimuli or events. Германия, Inst. Med. Psychol., Univ. Munich, Goethestr. 31, 80336 Munich. Библ. 45

ГРНТИ	34.39.17

ВИНИТИ 341.39.17.49.09
Рубрики: МОЗГ
ВОЛНЫ 'ГАММА'-ПОЛОСЫ
РАЗЛИЧНАЯ ИНТЕНСИВНОСТЬ
БЫСТРО И МЕДЛЕННО РЕАГИРУЮЩИЕ СУБЪЕКТЫ

Доп.точки доступа:
Makeig, S.

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