Sleep paralysis
Cultural significance and priming

Although the core features of sleep paralysis (e.g., atonia, a clear sensorium, and frequent hallucinations) appear to be universal, the ways in which they are experienced vary according to time, place, and culture. Over 100 terms have been identified for these experiences. Some scientists have proposed sleep paralysis as an explanation for reports of paranormal and spiritual phenomena such as ghosts, alien visits, demons or demonic possession, alien abduction experiences, the night hag and shadow people haunting.
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