Ethanol effect on sleep electroencephalogram by the correlation dimension.
The influence on sleep of alcohol (ethanol) was investigated in nine males using the correlation dimension (CD). Polysomnography (PSG) was recorded on a baseline night (BL-N) and on an ethanol (0.8 g/kg) night (Et-N). The mean correlation dimensions on Et-N, as well as on BL-N, significantly decreased from sleep stage 'awake' to sleep Stages 1, 2 and 3 and increased during rapid eye movement (REM) sleep. The mean correlation dimensions of the sleep EEG during sleep Stage 2 and those for the second sleep cycle on the Et-N were significantly higher than those on the BL-N. The changes in the correlation dimensions between sleep cycles were reduced on Et-N as compared to BL-N.
Kobayashi
T
T
Department of Neuropsychiatry, Fukui Medical University, Fukui, Japan. toshio@po5.nsk.ne.jp
Madokoro
S
S
Wada
Y
Y
Misaki
K
K
Nakagawa
H
H
D000328:Adult; D002492:Central Nervous System Depressants / Q000494:pharmacology*; D002940:Circadian Rhythm / Q000187:drug effects; D004569:Electroencephalography / Q000187:drug effects*; D000431:Ethanol / Q000494:pharmacology*; D006801:Humans; D008297:Male; D017286:Polysomnography; D012894:Sleep Stages / Q000187:drug effects*; D012895:Sleep, REM / Q000187:drug effects
D002492:Central Nervous System Depressants; D000431:Ethanol