Warren's eyes are moving rapidly behind the lids. His legs and arms are paralyzed. Warren is showing signs of:

Question

Quizplus · Accepted Answer

Warren's rapid eye movements behind closed lids and paralysis of limbs are classic signs of REM sleep, during which the brain is highly active but the body is immobilized. Sleep terrors involve sudden, frightened behavior and are not associated with rapid eye movements, sleep spindles are bursts of brain activity during stage 2 of non-REM sleep, and cataplexy involves sudden muscle weakness or paralysis while the individual is awake.

Warren's Eyes Are Moving Rapidly Behind the Lids