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"the somnambulist"

Sleepwalking, also known as somnambulism or noctambulism, is a sleep disorder belonging to the parasomnia family.  Sleepwalkers arise from the slow wave sleep stage in a state of low consciousness and perform activities that are usually performed during a state of full consciousness.  Sleepwalkers often have little or no memory of the incident, as their consciousness has altered into a dreamlike state in which the barrier between imagination and reality is obscured and indistinct.  

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