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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.
Myoclonus is a brief, involuntary, irregular (lacking rhythm) twitching of a muscle, a joint, or a group of muscles, different from clonus, which is rhythmic or regular. Myoclonus (myo-"muscle", clonus "spasm") describes a medical sign and, generally, is not a diagnosis of a disease.
Rhythmic movement disorder (RMD) is a neurological disorder characterized by repetitive movements of large muscle groups immediately before and during sleep often involving the head and neck. It was independently described first in 1905 by Zappert as jactatio capitis nocturna and by Cruchet as rhythmie du sommeil . [ 1 ]
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Epileptic spasms are a seizure type characteristic for the first year of life. The spasms are typically resistant to conventional pharmacotherapy. There are many episodes per day. [2] Episodes may take place after waking or feeding, [4] or less often before falling asleep. [8] Episode duration, [2] [4] intensity, and muscle groups affected are ...
For example, Robert Stickgold recounts having experienced the touch of rocks while falling asleep after mountain climbing. [6] This can also occur to people who have travelled on a small boat in rough seas or have been swimming through waves, shortly before going to bed, and they feel the waves as they drift to sleep, or people who have spent ...
Limit electronics before bed Keep your room cool and free of sound and light distractions If you can’t fall asleep after 20 minutes, get up and do a relaxing activity until you feel tired again
No screens 1 hour before bed. Got my room as dark as possible (hanging black out curtains tonight actually to block morning sun before I wake), reading with a red light before falling asleep ...