Which of the following is characteristic of REM sleep?

A) The EEG is dominated by long, slow waves.
B) The major postural muscles are highly relaxed.
C) Overall brain activity decreases, compared to other stages of sleep.
D) This type of sleep occurs mostly in the first two hours of sleep.

Postural Muscles

Muscles that are used to maintain body posture and balance, often working to hold the body stable in stationary positions and during movement.

EEG

Electroencephalography, a noninvasive method to record electrical activity of the brain via electrodes placed on the scalp, used in the diagnosis and monitoring of neurological disorders.

Brain Activity

The electrical and chemical processes occurring within the brain that enable thinking, feeling, and functioning.