Ernie's muscle movements are not inhibited when he is dreaming.As a result,he literally acts out his dreams,sometimes injuring himself in the process.Ernie appears to suffer from

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Ernie's behavior is most consistent with REM behavior disorder, a condition where the atonia (paralysis) that normally occurs during REM sleep is absent, leading to physical movement during dreams. This is different from sleepwalking (A) where the person is in a non-REM stage of sleep, and from sleep apnea (B) and narcolepsy (C) which are sleep disorders that do not necessarily involve physical movement during sleep.

Ernie's Muscle Movements Are Not Inhibited When He Is Dreaming