Which of the following is true of a night's sleep?
A)Individuals normally spend about 20 percent of sleep in light sleep.
B)REM sleep decreases as the night progresses.
C)Deep sleep is much greater in the first half than in the second half of a night's sleep.
D)Most REM sleep takes place during stage 1 of a night's sleep

Question

Quizplus · Accepted Answer

Deep sleep is more prominent in the first half of the night's sleep, and then it gradually decreases as the night progresses. This is why people usually feel more rested and alert when they get a full night's sleep. Option A is incorrect because individuals spend about 50% of sleep in light sleep. Option B is incorrect because REM sleep becomes more dominant in the second half of the night. Option D is incorrect because REM sleep occurs mainly during the later stages of sleep, not during stage 1.

Which of the Following Is True of a Night's Sleep