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Rheum from a cat's eyes. Rheum (/ r uː m /; 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. [3]
Rapid eye movement sleep (REM sleep or REMS) is a unique phase of sleep in mammals (including humans) and birds, characterized by random rapid movement of the eyes, accompanied by low muscle tone throughout the body, and the propensity of the sleeper to dream vividly. The core body and brain temperatures increase during REM sleep and skin ...
Non-rapid eye movement sleep is known for its beneficial effect on memory consolidation, especially for declarative memory (while procedural memory improvement is more associated with REM-sleep), [26] even if establishing a clear-cut distinction between stages' influence on type of learning may not be possible.
RBD is a sleep disorder characterized by the loss of normal skeletal muscle atonia during REM sleep and is associated with prominent motor activity and vivid dreaming. [6] [2] These dreams often involve screaming, shouting, laughing, crying, arm flailing, kicking, punching, choking, and jumping out of bed.
Sleep is divided into two broad types: non-rapid eye movement (non-REM or NREM) sleep and rapid eye movement (REM) sleep. Non-REM and REM sleep are so different that physiologists identify them as distinct behavioral states. Non-REM sleep occurs first and after a transitional period is called slow-wave sleep or deep sleep.
Sleeping with makeup on can result in morning puffiness. “It’s usually due to contact dermatitis, an inflammatory reaction triggered by prolonged exposure to an irritant or allergen like ...
Reaction time test, Karolinska Sleepiness Scale (KSS), [29] Maintenance of Wakefulness Test (MWT), [30] Multiple Sleep Latency Test (MSLT). [31] Electrooculogram (EOG) EOG is a technique for measuring the resting potential of the retina in the human eye. [32] Eye-video test: Measures eyes blinking and eye movements to detect microsleep events ...
Sleep is commonly referred to as the third pillar of health, yet research repeatedly shows that as many as one-third of Americans aren't getting enough of it. According to the American Academy of ...