Dan,startled by the Sound of a Loud Thump in the Middle

question 16

Multiple Choice

Dan,startled by the sound of a loud thump in the middle of the night,catches a glimpse of his roommate Yi wandering around their dorm room.The next morning Dan asks about the loud thump and Yi replies,"I think I was asleep the entire night ...but I have been known to sleepwalk from time-to-time." What stage of sleep was Yi likely experiencing while sleepwalking?

• A)Stage 1 N-REM
• B)Stage 2 N-REM
• C)Stage 3 or 4 N-REM
• D)REM sleep

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