K-complexes occur
A) during episodes of myoclonia.
B) throughout all sleep stages but primarily during REM.
C) in response to awakening.
D) spontaneously and in response to unexpected stimuli.

Question

Quizplus · Accepted Answer

K-complexes are spontaneous and can also occur in response to unexpected stimuli, such as a loud noise. They often occur during N2 sleep. They are not primarily associated with REM sleep or episodes of myoclonia, and while they can occur in response to awakening, it is not the primary trigger for their occurrence.

K-Complexes Occur