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  • Title: Absence of tonic electromyographic activity during sleep in normal and spastic nonmimetic skeletal muscles in man.
    Author: Tauber ES, Coleman RM, Weitzman ED.
    Journal: Ann Neurol; 1977 Jul; 2(1):66-8. PubMed ID: 900909.
    Abstract:
    An electromyographic study of nonmimetic skeletal muscles was carried out in 8 normal adults and 4 patients with spastic hemiparesis during all stages of sleep for a total of 21 nights. All normal subjects showed absence of tonic electromyographic activity in all nonmimetic skeletal muscles in all stages of sleep. Also, during quiet, relaxed wakefulness, tonic muscle discharges disappeared in the normal subjects. Three patients with upper motor neuron spasticity demonstrated results during sleep similar to those obtained in the normal subjects. In the fourth patient, tonic muscle discharges persisted into stage 2 non-REM sleep, disappeared within 30 to 240 seconds following the onset of stage 2 sleep, and were absent during stages 3 and 4 sleep and REM sleep.
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