수면 중 운동 조절
Motor Control during Sleep
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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.
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.