light sleep


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Related to light sleep: Light Sleeper, deep sleep

dys·nys·tax·is

(dis'nis-tak'sis),
A condition of half sleep.
Synonym(s): light sleep
[dys- + G. nystaxis, drowsiness]

dys·nys·tax·is

(dis'nis-tak'sis)
A condition of half sleep.
Synonym(s): light sleep.
[dys- + G. nystaxis, drowsiness]

light sleep

A colloquial term for the first stage of non–rapid eye movement (NREM) sleep. It is sometimes also applied to the second stage of NREM sleep.
See also: sleep
References in periodicals archive ?
A distant whippoorwill begins its distinctive song and I drift off into a light sleep.
Napping at Emily's" describes the poet's lying down on the lawn of the Dickinson house to take a nap and being visited in light sleep by the ghosts of those who knew the poet.
While the book has a solid grounding in the theories of representation, taken-for-granted statements like 'Death in Western culture has always viewed death as restful, often in a posture imitating a light sleep (sic)' (p.
When this happens it alerts the body that you're not breathing and the brain wakes you up to light sleep as a defense mechanism.
Zeo measures time spent in the four main stages of sleep: awake time, deep sleep, light sleep, and rapid-eye-movement (REM) sleep.
N2 is therefore sometimes thought of as a form of light sleep that allows the brain to perform some unconscious monitoring of internal and external signals while the individual is asleep (DeGennaro & Ferra, 2003).
Modern sleep researchers have known for years that sleep happens in several stages: falling asleep, light sleep, deep sleep and rapid eye movement, or REM sleep, during which dreams occur.
This elevated CRH increases sleep EEG frequency, decreases short wave sleep and increases light sleep and frequent waking.
With each abrupt change from deep sleep to light sleep, a signal goes from the brain to the upper airway muscles to open the airway; normal breathing resumes, often with a loud snort or gasp.
Each epoch was assigned to one of the following categories: wakefulness (low-amplitude EEG activity, high-voltage EMG activity), SWS (large-amplitude, synchronous EEG with sleep spindles present, greatly diminished tonic EMG, eyes closed, small eye movement potentials present, recumbent posture, usually lying on the animal's side or curled up with head down), REM sleep (desynchronized EEG, absence of tonic EMG, intermittent REM potentials, occasional body twitches while maintaining a recumbent sleep posture), NREM sleep (high-amplitude slow or spindle EEG activity, low-amplitude EMG activities), light sleep (equals NREM sleep minus SWS).
Theta: Theta waves are faster than delta waves, but still slow and typically are correlated with light sleep, daydreaming, inattention, creativity, and self-hypnosis.
Often, people with insomnia try to compensate for lost sleep or for boredom by remaining in bed longer; this extra time in bed simply causes more wake time, less deep sleep, and more light sleep (Hauri, 2000; Wohlgemuth & Edinger, 2000).