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Sleep paralysis is a state, during waking up or falling asleep, in which a person is conscious but in a complete state of full-body paralysis. [1] [2] During an episode, the person may hallucinate (hear, feel, or see things that are not there), which often results in fear. [1] [3] Episodes generally last no more than a few minutes. [2]
Hypnagogia is the transitional state from wakefulness to sleep, also defined as the waning state of consciousness during the onset of sleep. Its corresponding state is hypnopompia – sleep to wakefulness. Mental phenomena that may occur during this "threshold consciousness" include hallucinations, lucid dreaming, and sleep paralysis.
The Nightmare, by Henry Fuseli (1781) is thought to be one of the classic depictions of sleep paralysis perceived as a demonic visitation.. The night hag or old hag is the name given to a supernatural creature, commonly associated with the phenomenon of sleep paralysis.
You’re finally ready for bed, so you turn out the light and prepare for some much-needed shut-eye. For once, you drift off with no problem…but then, something extremely weird happens. You’re ...
In some cases, people experiencing sleep paralysis have frightening and even recurring visions. Known as sleep paralysis demons, these terrors don’t haunt nightmares, but reality.
A documentary on sleep paralysis, The Nightmare, was released in 2015, and a fictional psychological horror movie, Dead Awake, was released in 2016. Walter Wanger Productions / IMDB.
According to a study on sleep disturbances in the Journal of Neural Transmission, a hypnic jerk occurs during the non-rapid eye movement sleep cycle and is an "abrupt muscle action flexing movement, generalized or partial and asymmetric, which may cause arousal, with an illusion of falling". [13]
Hypnopompia (also known as hypnopompic state) is the state of consciousness leading out of sleep, a term coined by the psychical researcher Frederic Myers.Its mirror is the hypnagogic state at sleep onset; though often conflated, the two states are not identical and have a different phenomenological character.