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A hypnic jerk, hypnagogic jerk, sleep start, sleep twitch, myoclonic jerk, or night start is a brief and sudden involuntary contraction of the muscles of the body which occurs when a person is beginning to fall asleep, often causing the person to jump and awaken suddenly for a moment.
A bed partner or parent who tries to calm or restrain the patient by grabbing him or her may trigger a violent reaction as with sleepwalkers. In case of a confusional arousal triggered by an attempt of awakening the patient, violent behaviours may occur almost spontaneously.
A similar phenomenon to somniloquy named hypnogely has been observed, characterised by the sleeper spontaneously laughing. This phenomenon appears to be fairly common. [ 31 ] In a majority of cases, hypnogely is a genuine behavioural response and benign physiological phenomenon that occurs while the sleeper is dreaming in REM sleep.
The night hag is a generic name for a folkloric creature found in cultures around the world, and which is used to explain the phenomenon of sleep paralysis. A common description is that a person feels a presence of a supernatural malevolent being which immobilizes the person as if standing on the chest. [40] This phenomenon goes by many names.
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.
Maria Mikhaĭlovna Manaseina wrote “that for these phenomena to attract attention a certain power of observation is required; that is why they are chiefly found in intelligent persons.” Manaseina also noted that children are more likely to take interest in them: “[M]any children are accustomed to press their heads into the pillow and ...
It is the only drug authorised by the EMA to treat the whole disease in adults, and by the FDA to treat patients who have cataplexy with the indication to be used for combating excessive daytime sleepiness. [4] [20] This drug helps to normalise sleep architecture and inhibits the intrusion REM sleep elements like paralysis during the day. [4]
Catathrenia or nocturnal groaning is a sleep-related breathing disorder, consisting of end-inspiratory apnea (breath holding) and expiratory groaning during sleep.It describes a rare condition characterized by monotonous, irregular groans while sleeping. [1]