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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.
The word hypnagogia is sometimes used in a restricted sense to refer to the onset of sleep, and contrasted with hypnopompia, Frederic Myers's term for waking up. [2] However, hypnagogia is also regularly employed in a more general sense that covers both falling asleep and waking up.
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 dis
This can manifest as waking up multiple times during the night or waking up once and struggling to fall back asleep. As Mathis explains, this type of insomnia disrupts the continuity of sleep ...
Pay attention to whether any of these are waking you up at night, and make adjustments accordingly. For example, if you always wake up because the sun peeks in at 5 a.m., hang up blackout curtains.
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]
When a person struggles to fall asleep or stay asleep with no obvious cause, it is referred to as insomnia, [2] which is the most common sleep disorder. [3] Others include sleep apnea, narcolepsy and hypersomnia (excessive sleepiness at inappropriate times), sleeping sickness (disruption of sleep cycle due to infection), sleepwalking, and night ...
Consistent trouble falling asleep and staying asleep, however, might be something to discuss with your doctor. ... it means that going to bed and waking up at the same time every day — even on ...