The transition between wakefulness and sleep is marked by the appearance of ________ waves in the sleep record.
A) alpha
B) delta
C) gamma
D) theta
E) beta

Question

Quizplus · Accepted Answer

The transition between wakefulness and sleep is marked by the appearance of theta waves in the sleep record. Theta waves have a frequency of 4-7 Hz and are characteristic of stage 1 of non-REM sleep. Alpha waves (A) are present during wakefulness and relaxation, beta waves (E) are present during active thinking and concentration, gamma waves (C) are associated with attention and conscious perception, and delta waves (B) are characteristic of deep, restorative sleep.

The Transition Between Wakefulness and Sleep Is Marked by the Appearance