You have gotten into bed, and your muscles begin to relax when you "jump" in this light sleep and awaken. You have most likely experienced
A)cataplexy.
B)a hypnogogic image episode.
C)somnambulism.
D)a hypnic jerk.

Question

Quizplus · Accepted Answer

A hypnic jerk is an involuntary twitch that occurs just as a person is beginning to fall asleep, often causing them to awaken suddenly. This phenomenon is common and can be associated with the sensation of falling.

You Have Gotten into Bed, and Your Muscles Begin to Relax