Sleep study
test that records body activity during sleep
A sleep study is a test that records the activity of the body during sleep. There are five main types of sleep studies that use different methods to test for different sleep characteristics and disorders. These include simple sleep studies, polysomnography, multiple sleep latency tests, maintenance of wakefulness tests, and home sleep tests.
In medicine, sleep studies have been useful in identifying and ruling out various sleep disorders. Sleep studies have also been valuable to psychology, in which they have provided insight into brain activity and the other physiological factors of both sleep disorders and normal sleep. This has allowed further research to be done on the relationship between sleep and behavioral and psychological factors.
Utility
Depending on the method being used, sleep studies can help diagnose or rule out the following disorders:
Sleep-related breathing disorders, such as sleep apnea (repetitive pauses in breathing, shallow breathing, or collapse of the upper airway during sleep result in poor ventilation and sleep disruption).
Problems sleeping at night (insomnia): caused by stress, depression, hunger, physical discomfort, or other problems.
Sleep-related movement disorders, such as periodic limb movement disorder, which is repeated involuntary muscle twitching of the feet, legs, or arms during sleep. Sleep studies may be used to diagnose or rule out restless legs syndrome.
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