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

Question

Quizplus · Accepted Answer

Sleepwalking typically occurs during slow-wave sleep, also known as stage 3 or 4 N-REM sleep. This is the deepest stage of sleep, characterized by synchronized delta brain waves. It is unlikely for sleepwalking to occur during stage 1 N-REM or stage 2 N-REM because the brain waves are not deep enough. Sleepwalking also does not occur during REM sleep, which is characterized by rapid eye movements and muscle paralysis.

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