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ID 25742
file
title alternative
Ultradian rhythms in interhemispheric EEG activities
creator
Hori, Tadao
NDC
Medical sciences
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.
journal title
Memoirs of the Faculty of Integrated Arts and Sciences. III, Studies in information and behavior sciences
volume
Volume 12
start page
15
end page
22
date of issued
1989-02-28
publisher
広島大学総合科学部
issn
0385-1478
ncid
SelfDOI
language
jpn
nii type
Departmental Bulletin Paper
HU type
Departmental Bulletin Papers
DCMI type
text
format
application/pdf
text version
publisher
rights
Copyright (c) 1988 by Faculty of Integrated Arts and Sciences, Hiroshima University. All rights reserved.
department
Graduate School of Integrated Arts and Sciences
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