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Facial Muscle Tonus During REM and NREM Sleep
Author(s) -
Bliwise D.,
Coleman R.,
Bergmann B.,
Wincor M. Z.,
Pivii R. T.,
Rechtschaffen A.
Publication year - 1974
Publication title -
psychophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.661
H-Index - 156
eISSN - 1469-8986
pISSN - 0048-5772
DOI - 10.1111/j.1469-8986.1974.tb00578.x
Subject(s) - non rapid eye movement sleep , tonic (physiology) , psychology , electromyography , sleep (system call) , audiology , k complex , chin , slow wave sleep , vigilance (psychology) , rapid eye movement sleep , eye movement , anesthesia , electroencephalography , medicine , anatomy , neuroscience , computer science , operating system
Equipment and procedures were devised for quantifying relatively noise‐free recordings of low amplitude chin and lip electromyograms (EMGs) during sleep. A total of 28 REM periods were recorded from 5 young adult female S s. Tonic EMG levels tended to decline toward their lowest level of the night beginning 5 min in advance of REM periods. With very rare exceptions, the lowest EMG levels of the night were maintained throughout REM sleep. During the 20 min of NREM sleep which followed REM periods, mean EMG levels increased over the REM levels but were lower than those recorded during the 20 min of NREM sleep which preceded the REM periods. This pattern of tonic EMG variation obtained for each of the first 3 REM periods of the night.