Search results
Results From The WOW.Com Content Network
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.
These myoclonic twitches, jerks, or seizures are usually caused by sudden muscle contractions (positive myoclonus) or brief lapses of contraction (negative myoclonus). The most common circumstance under which they occur is while falling asleep ( hypnic jerk ).
Muscle movements during REM sleep are often twitches and occur simultaneously with normal sleep. The position of the body during sleep may determine which motor symptom is displayed. For example, Anderson et al. reported that one individual showed entire body rolling movements while sleeping on his side while displaying head rolling movements ...
Aric Prather, a psychologist who treats insomnia, tells Yahoo Life that it’s not exactly clear why some people can fall asleep with a TV on, while others can’t. However, he says our brain can ...
People with insomnia can have frequent difficulty falling asleep, staying asleep, and getting good-quality sleep. This results in feeling sleepy during the day, affecting your mood and ability to ...
There are three primary types of insomnia: sleep onset insomnia (difficulty falling asleep), sleep maintenance insomnia (difficulty staying asleep), and early waking, a subset of sleep maintenance ...
It is sometimes described as similar to a limb 'falling asleep' or an exaggerated sense of positional awareness of the affected area. The sensation and the urge can occur in any body part; the most cited location is the legs, followed by the arms. Some people have little or no sensation but still have a strong urge to move.
However, hypnagogia is also regularly employed in a more general sense that covers both falling asleep and waking up. Indeed, it is not always possible in practice to assign a particular episode of any given phenomenon to one or the other, given that the same kinds of experience may occur in both as people drift in and out of sleep.