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The main symptom of hypersomnia is excessive daytime sleepiness (EDS), or prolonged nighttime sleep, [7] which has occurred for at least 3 months prior to diagnosis. [8] Sleep drunkenness is also a symptom found in hypersomniac patients. [9] [10] It is a difficulty transitioning from sleep to wake. [10]
A speech sound disorder (SSD) is a speech disorder affecting the ability to pronounce speech sounds, which includes speech articulation disorders and phonemic disorders, the latter referring to some sounds not being produced or used correctly. The term "protracted phonological development" is sometimes preferred when describing children's ...
The test is based on the idea that the sleepier people are, the faster they will fall asleep. [15] [16] The Maintenance of Wakefulness Test (MWT) is also used to quantitatively assess daytime sleepiness. This test is performed in a sleep diagnostic center. The test is similar to the MSLT as it also relies on a measurement of initial sleep latency.
Reflex syncope can occur in otherwise healthy individuals, and has many possible causes, often trivial ones such as prolonged standing with the legs locked. [ citation needed ] The main danger of vasovagal syncope (or dizzy spells from vertigo) is the risk of injury by falling while unconscious.
Individuals who are overweight or obese can experience obstructive sleep apnea, gastroesophageal reflux disease (GERD), depression, asthma, and osteoarthritis, all of which can disrupt a good night's sleep. [92] In rats, prolonged, complete sleep deprivation increased both food intake and energy expenditure, with a net effect of weight loss and ...
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 ...
The information includes sleep onset time, sleep latency, number of awakenings in a night, time in bed, daytime napping, sleep quality assessment, use of hypnotic agents, use of alcohol and cigarettes, and unusual events which may influence a person's sleep. Such a log is usually made for one or two weeks before visiting a somnologist.
This is particularly apparent in the right hemisphere. In non-sleep-deprived people involved in verbal learning and arithmetic tasks, the anterior cingulate cortex and the right prefrontal cortex are active. Following sleep deprivation, there is increased activation of the left inferior frontal gyrus and the bilateral parietal lobes. This ...