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Sleepwalking, also known as somnambulism or noctambulism, is a phenomenon of combined sleep and wakefulness. [1] It is classified as a sleep disorder belonging to the parasomnia family. [ 2 ] It occurs during the slow wave stage of sleep, in a state of low consciousness, with performance of activities that are usually performed during a state ...
While it's more common in kids, with reported rates of 5% experiencing an episode within the previous year, as many as 1.5% of adults also report walking in their sleep each year.
Sleep drunkenness, also known as confusional arousal, is the feeling of confusion or sudden action upon waking up from deep sleep. Severe sleep inertia , one cause of oversleeping, is considered to develop sleep drunkenness.
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Sleepiness can also be a response to infection. [4] Such somnolence is one of several sickness behaviors or reactions to infection that some theorize evolved to promote recovery by conserving energy while the body fights the infection using fever and other means. [5] [6] Other causes include: [7] Anxiety; Brain tumor; Chronic pains
Puységur noted the similarity between this sleeping trance and natural sleep-walking or somnambulism, and he named it "artificial somnambulism". [1] Today we know similar states by the name "hypnosis", although that term was invented much later by James Braid in 1842. Some characteristics of Puysegur's artificial somnambulism were in any case ...
Roger in 1932 coined the term parasomnia and classified hypersomnia, insomnia and parasomnia. [3] Kleitman in 1939 recognized types of parasomnias as nightmares, night terrors , somniloquy (sleep-talking), somnambulism (sleepwalking), grinding of teeth , jactatians, enuresis , delirium , nonepileptic convulsions and personality dissociation. [ 4 ]
Sleep-talking can also be caused by depression, sleep deprivation, day-time drowsiness, alcohol, and fever. It often occurs in association with other sleep disorders such as confusional arousals, sleep apnea, and REM sleep behavior disorder. In rare cases, adult-onset sleep-talking is linked with a psychiatric disorder or nocturnal seizure. [2]