Lazaro goes to bed at 10 P.M. and quickly falls asleep. He sleeps soundly until 6 A.M. the next morning. During the first four hours of sleep, Lazaro will most likely experience:
A)long episodes of REM sleep.
B)stages 3 and 4 NREM sleep.
C)the complete absence of dreaming.
D)very light sleep consisting almost entirely of stages 1 and 2 NREM.

Question

Quizplus · Accepted Answer

During the first four hours of sleep, the body goes through stages 1, 2, 3, and 4 of NREM sleep, with the majority of time spent in stages 3 and 4. REM sleep is more prevalent in the later stages of sleep. Therefore, B is the correct answer as it states that Lazaro will most likely experience stages 3 and 4 NREM sleep during the first four hours of sleep.

Lazaro Goes to Bed at 10 P