Question

87. When in this stage of sleep, brain waves have a fast frequency and low amplitude and look very similar to beta waves, which occur when you are wide-awake and alert. Which state of sleep is this?

(A) Stage 1 sleep
(B) Stage 2 sleep
(C) Stage 3 sleep
(D) REMsleep
(E) Stage 4 sleep

Answer 1

The stage of sleep characterized by brain waves with a fast frequency and low amplitude is Stage 1 sleep. Option A.

Step-by-step explanation:

The stage of sleep characterized by brain waves with a fast frequency and low amplitude, similar to beta waves, is Stage 1 sleep.

Stage 1 sleep is a transitional phase that occurs between wakefulness and sleep. During this stage, brain wave activity shows a decrease in frequency and an increase in amplitude compared to wakefulness.

The brain waves during Stage 1 sleep are known as alpha and theta waves, with alpha waves being more synchronized and relatively higher in frequency (8-12 Hz) and lower in amplitude compared to beta waves. So Option A.