What is narcolepsy?
a. sleepwalking
b. the inability to breathe while sleeping
c. involuntary movements of the limbs while sleeping
d. sudden periods of sleepiness during the day
Question 2
Which condition has often been interpreted as an intrusion of REM sleep into wakefulness?
a. narcolepsy
b. sleep apnea
c. REM behavior disorder
d. omnambulism