Carlotta is a research assistant in the college sleep lab. As she monitors the EEG recording of a sleeping research participant in the lab, she notes the presence of theta brain waves, sleep spindles, and K complexes. Carlotta concludes that the subject is experiencing:
A) REM sleep.
B) stage 4 NREM.
C) a hypnagogic hallucination.
D) stage 2 NREM.

Question

Quizplus · Accepted Answer

Theta brain waves, sleep spindles, and K complexes are all characteristic of stage 2 NREM sleep. REM sleep is characterized by rapid eye movements and a different pattern of brain waves. Stage 4 NREM sleep is characterized by very slow brain waves called delta waves. A hypnagogic hallucination occurs during the transition from wakefulness to sleep and is not related to a specific stage of sleep.

Carlotta Is a Research Assistant in the College Sleep Lab