At 3 O'clock in the Morning,John Has Already Slept for 4

question 327

Multiple Choice

At 3 o'clock in the morning,John has already slept for 4 hours.As long as his sleep continues,we can expect an increasing occurrence of

• A) hypnagogic sensations.
• B) muscle tension.
• C) REM sleep.
• D) NREM-3 sleep.

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