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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.
Sleep is complicated, but if you find that you’re struggling with falling asleep or staying asleep, there are a few things you can do. The National Institutes of Health (NIH) suggests the following:
“Encourage activities and exposure to natural light during the day to support healthy sleep-wake cycles.” It's also crucial to try to avoid overstimulation in the evenings by limiting loud ...
In contrast, the sleep issues studied here include excessive daytime sleepiness (falling asleep during meals or social activities) and a marked lack of enthusiasm for daily tasks,” Dr. Porter said.
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.
These movements can lead the patient to wake up, and if so, sleep interruption can be the origin of excessive daytime sleepiness. [2] PLMD is characterized by increased periodic limb movements during sleep, which must coexist with a sleep disturbance or other functional impairment, in an explicit cause-effect relationship.
So-called initial insomnia involves difficulty falling asleep; maintenance insomnia occurs when you wake up in the middle of the night but are able to go back to sleep; and late insomnia is waking ...
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 ...
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