Which of the following is an incorrect statement regarding the various sleepwake disorders?

A) Episodes of narcolepsy occur in a rapid, unpredictable manner due to a

deficiency in orexin

B) Night terrors are characterized by difficulty consoling those who suffer from

them

C) Experiencing sleep deprivation is thought to cause increased REM in

subsequent sleep sessions

D) Trouble falling or staying asleep constitutes a parasomnia disorder, whereas

unusual sleep-related behaviors constitute a dyssomnia

Click to reveal answer

The sleep-wake disorders constitute a diverse group of disorders

that involve abnormalities in falling asleep, staying asleep, the quality of sleep, the

timing of sleep, and sleep-related behaviors and feelings. They can be broadly

classified as either parasomnias or dyssomnias, however their definitions are

reversed in Answer D, making it the correct answer.

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Day 157 MCAT Practice Question