Marsha is a participant in a sleep study. After about 30 minutes of sleep, she enters Stage 4. What are the researchers most likely to observe when studying Marsha during this period?
A) slow, rolling eye movements
B) reports of vivid, unrealistic dreams if Marsha is awakened
C) slow brain waves called delta waves
D) fast, brain waves called alpha waves

Question

Quizplus · Accepted Answer

Stage 4, also known as delta sleep, is characterized by the presence of slow brain waves called delta waves.

Marsha Is a Participant in a Sleep Study