?These are disorders of arousal,? said Schenck, who has studied parasomnias for decades. ?They most often occur during the slowest, deepest stage of sleep, called delta sleep. It?s like an alarm or trigger goes off in the central nervous system, and you go from your basement to your roof in no time flat.
?Your cognition is deeply asleep, and you?re not with the program, but your body is activated,? Schenck said. ?That?s dangerous because then you start walking and running and doing all sorts of things without your mind being awake.?
It?s difficult to study sexsomnia, because unless people injure themselves many have no idea of their unconscious sexual activity until a bed partner tells them about it.
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