Alterations in Autonomic Functions During Sleep
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Abstract
Abstract Dramatic changes in autonomic function occur in sleep. To the untutored, sleep is a period of quiescence, rest and stability, when little variation in autonomic control is expected. Yet, in one phase of sleep called rapid eye movement (REM) sleep (also referred to as desynchronized, paradoxical, or active sleep), a series of changes occurs in the autonomic outflows through a central disruption of those neural mechanisms controlling homeostasis. REM sleep is characterized by muscle atonia, rapid eye movements, and a low-voltage, fast-wave electroencephalogram (EEG).