The human brain cycles into two main states of sleep.They are
A) beta brain waves and alpha brain waves.
B) shallow sleep and deep sleep.
C) NREM sleep and REM sleep.
D) stage 1 sleep and stage 2 sleep.

Question

Quizplus · Accepted Answer

The two main states of sleep are NREM (non-rapid eye movement) sleep and REM (rapid eye movement) sleep. NREM sleep has 3 stages of progressively deeper sleep, while REM sleep is characterized by rapid eye movement, dreaming, and muscle paralysis. Sleep cycles through these stages multiple times throughout the night.

The Human Brain Cycles into Two Main States of Sleep