Analyze the following scenario and predict the most likely outcome for the participant's sleep on the second night. Explain the principle that accounts for this outcome.

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REM rebound is the phenomenon where an individual, after being specifically deprived of REM sleep, will spend a significantly longer duration in the REM stage during subsequent undisturbed sleep periods. This compensatory increase in REM sleep suggests an effort to recover the lost time in this particular sleep stage.

REM Rebound

The phenomenon of REM rebound, where individuals compensate for lost REM sleep by spending more time in that stage during subsequent sleep, indicates that REM sleep is homeostatically regulated.

Homeostatic Regulation of REM Sleep

In individuals who are not depressed, REM rebound may function as an adaptive mechanism for coping with stress. This process is thought to help by reducing the emotional significance of negative experiences that occurred while awake.

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