This study was supported by Grant 448-13-RD from the Department of Mental Health, State of Illinois, and by research grant M-4151 and Research Career Program Award MH-K3-18,428 to A. Rechtschaffen from the National Institute of Mental Health, U.S. Public Health Service.
Facial Muscle Tonus During REM and NREM Sleep
Article first published online: 30 JAN 2007
Volume 11, Issue 4, pages 497–508, July 1974
How to Cite
Bliwise, D., Coleman, R., Bergmann, B., Wincor, M. Z., Pivii, R. T. and Rechtschaffen, A. (1974), Facial Muscle Tonus During REM and NREM Sleep. Psychophysiology, 11: 497–508. doi: 10.1111/j.1469-8986.1974.tb00578.x
- Issue published online: 30 JAN 2007
- Article first published online: 30 JAN 2007
- Muscle activity;
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 Ss. 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.