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Somnambulation has been recognized and described for centuries. The term was first used in the 17th century by Thomas Willis, an English physician. Willis suggested that somnambulation was caused by a disturbance in the flow of "animal spirits" in the brain.
In the 19th century, the study of somnambulism became popular among psychologists and neurologists. Jean-Martin Charcot, a French neurologist, believed that somnambulation was a form of hysteria. Sigmund Freud, the founder of psychoanalysis, saw somnambulism as a manifestation of repressed desires.
Today, somnambulation is recognized as a sleep disorder. It is believed to be caused by a disruption in the sleep-wake cycle, which can be triggered by stress, anxiety, or other factors. Somnambulation is most common in children, but it can also occur in adults.
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