Motor Control during Sleep

Chung, Sun Ju

doi:2006.3.1.11

J Korean Sleep Res Soc > Volume 3(1); 2006 > Article

REVIEW ARTICLE

J Korean Sleep Res Soc. 2006;3(1):11-21. doi: https://doi.org/10.13078/jksrs.06003

수면 중 운동 조절

정선주

울산대학교 의과대학 서울아산병원 신경과학교실

Motor Control during Sleep

Sun Ju Chung

Department of Neurology, Asan Medical Center, University of Ulsan College of Medicine

Corresponding Author: Sun Ju Chung ,Tel: +82-2-3010-3988, Fax: +82-2-474-4691, Email: sjchung@amc.seoul.kr

Received: June 2, 2006 Accepted: June 20, 2006 Published online: June 30, 2006

ABSTRACT

The regulation of motor system during awake-sleep states is controlled by well-organized system. During wakefulness, most somatic muscles exhibit a background level of activity. During nonrapid eye movement (NREM) sleep, there is a slight decrease in somatic muscle activity compared with that during wakefulness. During REM sleep, there is a dramatic reduction in ongoing muscle activity to theextent that even background muscle tone is abolished. Throughout REM sleep, there is tonic inhibition of motoneurons, as well as phasically occurring brief periods of motoneuron excitation. There are various sleep disorders that involve abnormal patterns of motor inhibition, excitation, or both. These disorders occur in part, or in whole, because of the abnormal expression of the mechanisms that control muscle activity during REM sleep.

Keywords: Motor control | Rapid eye movement | Nonrapid eye movement