Yesterday, Callie stayed awake the entire night to finish a term paper. Tonight, she may sleep only slightly longer than she usually does, but she will spend a significantly greater percentage of the night in REM sleep. This is because of a phenomenon known as:

Question

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The REM rebound effect refers to the tendency to spend more time than usual in REM sleep after a period of sleep deprivation or REM sleep deprivation. In this scenario, Callie stayed awake all night to finish her term paper, which would have caused a REM sleep deficit. As a result, the following night she is likely to experience an increase in REM sleep, even if she sleeps only slightly longer than usual.

Yesterday, Callie Stayed Awake the Entire Night to Finish a Term