The deepest stage of sleep (Stage 4)is marked by:
A)³ 50% delta waves.
B)³ 50% theta waves
C)³ 50% theta waves.
D)alpha waves.

Question

Quizplus · Accepted Answer

Stage 4 of sleep is also known as delta sleep because more than 50% of the brain's waves during this stage are delta waves. Theta waves are typically associated with lighter stages of sleep, while alpha waves are more commonly seen when a person is awake and relaxed.

The Deepest Stage of Sleep (Stage 4)is Marked By