Multiple Choice
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
Correct Answer:

Verified
Correct Answer:
Verified
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