During the night,two types of sleep alternate with each other; they are:
A)alpha sleep and delta sleep.
B)Stage 1 and Stage 2 sleep.
C)REM and NREM sleep.
D)relaxed sleep and alert sleep.

Question

Quizplus · Accepted Answer

REM (Rapid Eye Movement) and NREM (Non-Rapid Eye Movement) sleep are the two types of sleep that alternate with each other during the night. NREM sleep is further divided into stages 1, 2, and 3, while REM sleep is a unique stage characterized by active brain activity, rapid eye movements, and muscle paralysis.

During the Night,two Types of Sleep Alternate with Each Other;