The brain is most active during which portion of each sleep cycle?
A. the beginning of each sleep cycle
B. the middle of each sleep cycle
C. the end of each sleep cycle
D. The brain is not active during the sleep cycle.
Answer (2)
The brain is most active during the end of each sleep cycle, specifically during REM sleep. This stage involves significant brain activity similar to wakefulness. Thus, the correct answer is C. ;
The brain is most active at the end of each sleep cycle during REM sleep, where significant processes like dreaming and memory consolidation occur. Hence, the correct answer is C. the end of each sleep cycle.
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