A 40-year-old man with sleep apnea participates in a sleep study. During his evaluation, normal sawtooth waves are observed on his EEG tracing. This p

[Kathryn]

#february2020mccqe1

A 40-year-old man with sleep apnea participates in a sleep study. During his evaluation, normal sawtooth waves are observed on his EEG tracing. This pattern is associated with which period of sleep?
(A) REM
(B) Stage 1
(C) Stage 2
(D) Stage 3
(E) Stage 4