The stage of sleep characterized by the HIGHEST level of brain activity is stage _____ sleep.
A)4
B)5 or REM
C)2
D)1

Question

Quizplus · Accepted Answer

Stage 5 or REM (rapid eye movement) sleep is characterized by the highest level of brain activity. During this stage, the brain is highly active and exhibits patterns similar to those seen during wakefulness, including rapid eye movements, increased heart rate, and irregular breathing. This is also the stage where we have the most vivid and memorable dreams.

The Stage of Sleep Characterized by the HIGHEST Level of Brain