title: [Somatosensory evoked potentials in the sleep-wakefulness cycle in healthy subjects and narcolepsy patients].
abstract: Studies of somatosensory evoked potentials (SSEPs) were conducted in various functional states of sleep-alertness cycle (relaxed alertness, 2-nd and delta-stages of slow sleep, rapid sleep) in 7 healthy subjects and 8 patients with polysymptom narcolepsy. Integrated amplitude (IA) was calculated in poststimulus intervals, accordingly to SSEPs division into groups of early (20-80 ms), mean (80-200 ms) and late (200-400 ms) components. It has been shown that in patients with polysymptom narcolepsy IA of all SSEPs components in alertness was lower than in healthy subjects; during sleep higher IA values of earlier components were found in comparison with healthy subjects and lower values--of later negative wave at slow sleep. Psychophysiological interpretation of high amplitude negative shift in the area of late SSEPs components during slow sleep is suggested.
authors.forename: L R
authors.initials: LR
authors.lastname: Zenkov
authors.forename: V M
authors.initials: VM
authors.lastname: Razumov
authors.forename: N N
authors.initials: NN
authors.lastname: Iakhno
authors.forename: A P
authors.initials: AP
authors.lastname: Petrenko
mesh_terms: D000328:Adult; D004569:Electroencephalography / Q000295:instrumentation / Q000379:methods; D005073:Evoked Potentials, Somatosensory / Q000502:physiology*; D006801:Humans; D009290:Narcolepsy / Q000503:physiopathology*; D011930:Reaction Time / Q000502:physiology; D012016:Reference Values; D012890:Sleep / Q000502:physiology*; D012894:Sleep Stages / Q000502:physiology; D014851:Wakefulness / Q000502:physiology*
vernacular_title: Somatosensornye vyzvannye potentialy v tsikle son--bodrstvovanie u zdorovykh ispytuemykh i bol'nykh narkolepsieĭ.