PL EN


Preferences help
enabled [disable] Abstract
Number of results
1996 | 56 | 4 | 955-959
Article title

Interhemispheric differences of sleep EEG complexity

Selected contents from this journal
Title variants
Languages of publication
EN
Abstracts
EN
Complexity of EEG (W), a global measure reflecting degree of spatial synchronization, was computed for whole night recordings of sleep EEG of 10 healthy volunteers, 9 males and 1 female (age 21-53) and 6 depressive patients, 5 males and 1 female (age 23-64). Sleep was scored visually in 20's epochs, W was calculated in 2.5 s segments and the median from 8 segments (20 s) was calculated. W was calculated for the whole field of 21 electrodes and for the left and right hemisphere separately (2 x 8 electrodes). Measure of global power (S) and generalized frequency (f) were also computed for the same data. In healthy subjects the complexity was higher over the right hemisphere during waking, and the difference shifted to higher complexity over the left hemisphere in slow wave sleep (F=5.15, df1=4, df2=6856, P<0.0005). The opposite trend was found in depressives (F=10.51, dfl=4, df2=3960, P<0.0001).
Publisher

Year
Volume
56
Issue
4
Pages
955-959
Physical description
Contributors
References
Document Type
article
Publication order reference
W.Szelenberger, Dept. of Psychiatry, Medical Academy, 27 Nowowiejska St., 00-665 Warsaw, Poland
Identifiers
YADDA identifier
bwmeta1.element.element-from-psjc-581ae6cf-271a-327e-a3d2-e462a33e4bb1
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.