10 Facts About Sleepwalking

9. The brain does not all sleep at once

Many studies show that when a person falls asleep, certain parts of the brain may remain awake, or fall asleep at a different time. Sleepwalking engages the part of the brain which generates complex behaviors—and that part of the brain remains awake. Therefore, a person may repeat familiar daily activities, but will not do anything new. The decision-making part of the brain remains asleep during sleepwalking.