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

A) severe sleepwalking.
B) sleep apnea.
C) narcolepsy.
D) REM behavior disorder.


Answer: D
Rationale: A severe and potentially dangerous condition is REM behavior disorder. People with this condition do not show the typical restriction of movement during REM sleep; in fact, they appear to be acting out the content of their dreams.

Psychology

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