As Jenelle Is Falling Asleep, She Has a Sensation of Walking

Multiple Choice

As Jenelle is falling asleep, she has a sensation of walking along. Suddenly, her right leg steps into a hole and her foot jerks in bed, seemingly simulating the experienced fall in her sleeping state. These muscle contractions are

A) sleep spindles.
B) K complexes.
C) alpha wave activity.
D) spastic jerks.
E) hypnic jerks.