The proportion of time spent in stage 4 sleep decreases over the course of a night.

Name: The proportion of time spent in stage 4 sleep decreases over the course of a night.
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Question

Quizplus · Accepted Answer

This is true. Stage 4 sleep, also known as slow-wave or delta sleep, typically occurs in the first half of the night and decreases in duration as the night progresses. Rapid eye movement (REM) sleep, which is also important for restorative sleep, increases in duration in the latter portions of the night.

The Proportion of Time Spent in Stage 4 Sleep Decreases