BAEP latency changes during nocturnal sleep are not correlated with sleep stages but with body temperature variations.
Serial BAEPs and polysomnograms were recorded during nocturnal sleep in 8 normal subjects. Wave V latency and the I-V interval were found to increase significantly during stages II, III + IV and paradoxical sleep when compared to waking. Trend curves of BAEP latencies showed that these shifts were independent of sleep stages and reversed at the end of the night. BAEP changes were found to be related to physiological hypothermia during the night.
Bastuji
H
H
EEG Department, Hôpital Neurologique, Lyon, France.
Garcia Larrea
L
L
Bertrand
O
O
Mauguière
F
F
D000328:Adult; D001831:Body Temperature; D001933:Brain Stem / Q000502:physiology*; D002940:Circadian Rhythm; D005072:Evoked Potentials, Auditory; D005260:Female; D006801:Humans; D008297:Male; D011930:Reaction Time; D012890:Sleep / Q000502:physiology*; D012894:Sleep Stages / Q000502:physiology; D014851:Wakefulness / Q000502:physiology