How do sleep stages 3 and 4 differ?
A) body position
B) percentage of REM
C) percentage of serotonin that is released
D) percentage of slow, low amplitude waves

Question

Quizplus · Accepted Answer

Stages 3 and 4 both involve slow, high amplitude waves known as delta waves. However, stage 4 has a higher percentage of delta waves than stage 3. So, the percentage of slow, low amplitude waves is the main difference between stages 3 and 4.

How Do Sleep Stages 3 and 4 Differ