Multiple Choice
Histamine activity in the brain is highest during ______________ and drops off during ________________.
A) wakefulness; REM and NREM sleep
B) wakefulness and REM sleep; NREM sleep
C) REM and NREM sleep; wakefulness
D) REM sleep; wakefulness and NREM sleep
Correct Answer:

Verified
Correct Answer:
Verified
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