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The patient is asked to nap for 20 minutes, and then is awakened. The nap process is repeated every 2 hours for a total of four or five times. The patient must remain awake for the entirety of the 2 hours between nap opportunities. The patient may be asked to fill out a post-test questionnaire.
MSLT Scores Minutes Sleepiness 0–5: Severe 5–10: Troublesome 10–15: Manageable 15–20: Excellent A sleep onset latency of 0 to 5 minutes means severe sleep deprivation, 5 to 10 minutes is "troublesome", 10 to 15 minutes indicates a mild but "manageable" degree of sleep debt, and 15 to 20 minutes is indicative of "little or no" sleep debt.
Sign with text: Sömnförsök pågår (Sleep study in progress), room for sleep studies in NÄL hospital, Sweden. 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.
The answer to avoiding post-nap grogginess is keeping your nap relatively short — ideally, half an hour or less. “The grogginess we experience when waking up is called sleep inertia. We are ...
Another tool is the Multiple Sleep Latency Test (MSLT), which has been used since the 1970s. It is used to measure the time it takes from the start of a daytime nap period to the first signs of sleep, called sleep latency. Subjects undergo a series of five 20-minute sleeping opportunities with an absence of alerting factors at 2-hour intervals ...
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In individuals deprived of sleep, somnolence may spontaneously dissipate for short periods of time; this phenomenon is the second wind, and results from the normal cycling of the circadian rhythm interfering with the processes the body carries out to prepare itself to rest. The word "somnolence" is derived from the Latin "somnus" meaning "sleep".
Late afternoon, our sleep drive is increasing but our alerting signal, which keeps us awake, hasn’t caught up yet, resulting in the phenomenon known as the “3 p.m. slump.”