広島大学総合科学部紀要. III, 情報行動科学研究 12 巻
1989-02-28 発行

脳波を指標とした大脳半球機能差のウルトラディアン・リズム

Ultradian rhythms in interhemispheric EEG activities
堀 忠雄
全文
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StudInfoBehavSci_12_15.pdf
Abstract
Ultradian variations of interhemispheric activities were studied on 8 right-handed male subjects. Parietal EEG (P3, P4) was recorded every 30 min for 1-min duration from 08:00 to 19:00 in eyes closed rest periods. EEG laterality index scores (LISs) were calculated from the amplitude (square root of power) of alpha (8-13Hz). LISs showed significant periodicities in all subjects, indicating EEG asymmetries fluctuate with time. Moreover, the periods and acrophases of the observed ultradian variations were different among the subjects. The relationships between the EEG asymmetry and the cognitive functions were discussed.
権利情報
Copyright (c) 1988 by Faculty of Integrated Arts and Sciences, Hiroshima University. All rights reserved.