REM sleep ends when there is a rise in _____,which increase the level of forebrain activity nearly to the awakened state.
A)melatonin and acetylcholine
B)serotonin and acetylcholine
C)norepinephrine and melatonin
D)serotonin and norepinephrine

Question

Quizplus · Accepted Answer

During REM sleep, the levels of serotonin and norepinephrine are low. However, as REM sleep cycle ends, the levels of these neurotransmitters rise, leading to an increase in forebrain activity almost to the awakened state. Therefore, option D is the correct answer. Options A, B, and C are incorrect as they do not include the neurotransmitter norepinephrine, which is essential in the rise of forebrain activity.

REM Sleep Ends When There Is a Rise in _____,Which