7 . Brainstem Systems Mediating the Control of Muscle Tone
نویسنده
چکیده
During rapid eye movement (REM) sleep, muscle tone in the "anti-gravity" muscles is suppressed. This "atonia" prevents one from "acting out" his dreams. Pathology in the systems producing REM sleep suppression of tone is responsible for cataplexy, a loss of muscle tone in waking triggered by environmental variables that produce sudden excitement. The REM sleep without atonia syndrome, which in humans is termed the REM behavior disorder, is also believed to result from abnormal operations of this system. This chapter will review the current state of knowledge about the atonia system.
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