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Neurology. Irregular sleep–wake rhythm disorder ( ISWRD) is a rare form of circadian rhythm sleep disorder. [ 2][ 3] It is characterized by numerous naps throughout the 24-hour period, no main nighttime sleep episode, and irregularity from day to day. [ 4] Affected individuals have no pattern of when they are awake or asleep, may have poor ...
Rapid eye movement behavior disorder occurs when there is a loss of normal voluntary muscle atonia during REM sleep resulting in motor behavior in response to dream content. It can be caused by adverse reactions to certain drugs or during drug withdrawal; however, it is most often associated with the elderly and in those with neurodegenerative ...
Rheum from a cat's eyes. Rheum ( / ruːm /; from Greek: ῥεῦμα rheuma 'a flowing, rheum') is a thin mucus naturally discharged from the eyes, nose, or mouth, often during sleep (contrast with mucopurulent discharge ). [ 1][ 2][ 3] Rheum dries and gathers as a crust in the corners of the eyes or the mouth, on the eyelids, or under the nose ...
We've all grown up thinking that sitting too close to the television is damaging to our eyes ... but that might not be the case. Technology spawns lots of confusion ... and a few affectionately ...
The breaking community wants the world to give b-girl Raygun a break as the Paris Olympics wrapped up. The sport made its Olympic debut in Paris — it might never be back — and one of the ...
In South Africa, the phrases "now now", "just now", and "right now" all have differing connotations: "Now now" often means minutes later; "just now" means hours later; and "right now" actually means now. [citation needed] For example, the following line using South African slang: "I am going to see a movie just now. I will drive there now now.
Blue light, a type of high-energy light, is part of the visible light spectrum. High-energy visible light (HEV light) is short-wave light in the violet/blue band from 400 to 450 nm in the visible spectrum, which has a number of purported negative biological effects, namely on circadian rhythm and retinal health (blue-light hazard), which can lead to age-related macular degeneration.
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