In the study, 25% of the patients had increased muscle activity during REM sleep.
Sufferers go into REM sleep immediately when they nap, and tend to wake up refreshed at least temporarily.
This increases your frequency and depth of REM sleep, viewed by experts as the most rejuvenating level of slumber.
During REM sleep, there is increased brain activity and visual stimulation.
In one experiment, Oldis and another colleague named Marjorie Kaye had both entered REM sleep, when the program turned on the red light bulb cue for Oldis.
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Eye movement is one of the few things that we do in both our dreams and with our bodies, hence the term Rapid Eye Movement, or REM sleep.
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This is according to a patent application the company filed that proposes, among other things, an advanced alarm clock that monitors brain waves to detect when you enter and leave REM sleep.
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Some smartphone apps like SleepCycle and DreamOn, along with the wristband product Lark and mask REM Dreamer or DreamStar can be used to detect REM sleep, with some even sending data to a common website.
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Alcohol reduces how much time we spend in rapid eye movement (REM) sleep - the stage of sleep where dreams generally occur.
Leads attached next to the eyes can capture eye movement, useful for revealing when a patient is in rapid eye movement, or REM, sleep.
Excessive alcohol consumption disrupts the 'REM' (Rapid Eye Movement) stage of deep sleep to ruin a night's rest, according to the UK Department of Health.
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