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Polysomnography (PSG) is a multi-parameter type of sleep study [1] and a diagnostic tool in sleep medicine.The test result is called a polysomnogram, also abbreviated PSG.The name is derived from Greek and Latin roots: the Greek πολύς (polus for "many, much", indicating many channels), the Latin somnus ("sleep"), and the Greek γράφειν (graphein, "to write").
Fatigue in a medical context is used to cover experiences of low energy that are not caused by normal life. [2] [3]A 2021 review proposed a definition for fatigue as a starting point for discussion: "A multi-dimensional phenomenon in which the biophysiological, cognitive, motivational and emotional state of the body is affected resulting in significant impairment of the individual's ability to ...
Management of ME/CFS (myalgic encephalomyelitis/chronic fatigue syndrome) focuses on symptoms management, as no treatments that address the root cause of the illness are available. [ 1 ] : 29 Pacing, or regulating one's activities to avoid triggering worse symptoms, is the most common management strategy for post-exertional malaise .
Driver drowsiness detection aims to prevent collisions due to driver fatigue. [17] The vehicle obtains information, such as facial patterns, steering movement, driving habits, turn signal use, and driving velocity, to determine if the driver's activities correspond with drowsy driving. [18]
Some studies have also indicated correlation between insomnia and anxiety, post-traumatic stress disorder, and suicide. Sleep disorders can increase the risk of psychosis and worsen the severity of psychotic episodes. [125] Sleep research also displays differences in race and class. Short sleep and poor sleep are observed more frequently in ...
Somnolence (alternatively sleepiness or drowsiness) is a state of strong desire for sleep, or sleeping for unusually long periods (compare hypersomnia). It has distinct meanings and causes. It has distinct meanings and causes.
PERCLOS is a drowsiness detection measure, referred to as the percentage of eyelid closure over the pupil over time and reflects slow eyelid closures or droops rather than blinks. [11] Various real-time operator drowsiness detection systems use PERCLOS assessment and proprietary developed software to determine the onset of fatigue.
Sleep deprivation causes drowsiness, which can affect students in higher education. Drowsiness can affect students in their classes and poses a risk for those who commute by car to their college campuses. Many students commute by car to their classes from their homes; at the Ohio State University, close to 30% of students commute.