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  2. Hypnic jerk - Wikipedia

    en.wikipedia.org/wiki/Hypnic_jerk

    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.

  3. Hypnagogia - Wikipedia

    en.wikipedia.org/wiki/Hypnagogia

    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.

  4. Falling (sensation) - Wikipedia

    en.wikipedia.org/wiki/Falling_(sensation)

    A hypnic jerk is the feeling triggered by a sudden muscle twitch, causing the feeling of falling while sleeping or dreaming. Hypnic jerks typically occur moments before the first stage of sleep. [2] About 70% of people have experienced hypnic jerk. [3] Hypnic jerks are most common in children, when dreams are considered the most simple. [4]

  5. Myoclonus - Wikipedia

    en.wikipedia.org/wiki/Myoclonus

    Sleep myoclonus occurs during the initial phases of sleep, especially at the moment of dropping off to sleep, and include familiar examples of myoclonus such as the hypnic jerk. Some forms appear to be stimulus-sensitive. Some people with sleep myoclonus are rarely troubled by it, or need treatment.

  6. Nocturnal emission - Wikipedia

    en.wikipedia.org/wiki/Nocturnal_emission

    Due to the difficulty in collecting ejaculate produced during nocturnal emissions, relatively few studies have examined its composition. [4] [5]In the largest study, which included nocturnal emission samples from 10 men with idiopathic anejaculation, the semen concentration was equivalent to samples obtained from the same men by penile vibratory stimulation, although the proportions of sperm ...

  7. Rhythmic movement disorder - Wikipedia

    en.wikipedia.org/wiki/Rhythmic_movement_disorder

    Other sleep related disorders like sleep apnea are ruled out by examining the patients' respiratory effort, air flow, and oxygen saturation. RMD patients often show no abnormal activity that is directly the result of the disorder in an MRI scan. [7] RMD episodes are strongly associated with stage 2 NREM sleep and, specifically, K Complexes [8].

  8. Why You Sometimes Twitch Awake Right Before You Fall Asleep - AOL

    www.aol.com/news/why-twitch-awake-before-sleep...

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  9. Music and sleep - Wikipedia

    en.wikipedia.org/wiki/Music_and_sleep

    Compared to other pharmacological methods for improving sleep, music has no reported side effects [3] and is easy to administer. [4] In direct comparisons, music has improved sleep quality greater than audiobooks [5] [6] and has been comparable to sedative hypnotics. [7]