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You can help Wikipedia by improving weasel-worded statements. | Sleep debt is the cumulative effect of not getting enough sleep. A large sleep debt, for example, would suggest that a person is mentally or physically fatigued due to insufficient sleep. There is debate in the scientific community over the specifics of sleep debt. Image File history File links Unbalanced_scales. ...
Sleep is the state of natural rest observed in most mammals, birds, fish, as well as invertebrates such as the fruitfly Drosophila. ...
Scientific skepticism of sleep debt There is debate among researchers as to whether there is such a thing as sleep debt. The Sept 2004 issue of the journal Sleep (not available on-line) contained dueling editorials from two of the world's leading sleep researchers: David F. Dinges and Jim Horne. The popular understanding within the journal that sleep debt can be accumulated indefinitely has however been disproved and is no longer considered plausible. However, some believe[citation needed] that there is a sleep debt that can amount to under 20 hours; though this may/may not be the case.
Evaluating sleep debt Sleep debt has been tested/experimented through the use of a sleep latency test. This test attempts measure how easily someone can fall asleep. When this test is done several times during the day, it is called a multiple sleep latency test (MSLT).
However, one may need not go to a sleep clinic to try this experiment; a home process has been considered: it involves relaxing quietly, alone for a short amount of time--if the feeling of sleep comes fairly easily, one is considered to have sleep debt. Some also suggest that the quality of sleep can have an effect on the level of one's sleep debt.
The Epworth Sleepiness Scale (ESS) has also been used to measure potential sleep debt along with a variety of other evaluations. Specifically, the ESS, created by an Australian researcher, is a simple eight item questionnaire with scores ranging from 0-24.
A January 2007 study[1] suggests that saliva tests of the enzyme amylase could be used to indicate sleep debt, as the enzyme increases its activity in correlation with the length of time a subject has been sleep deprived. α-Amylase Amylase (EC 3. ...
Society-wide sleep debt The National Geographic Magazine reported that the demands of work, social activities, and the availability of 24-hour home entertainment and Internet access have caused people to sleep less now than in premodern times.[2] The research behind this article has led some organizations, including the National Sleep Foundation,[3] to create educational campaigns to draw attention to sleep debt. The National Geographic Magazine, later shortened to National Geographic, is the official journal of the National Geographic Society. ...
As part of its consumer awareness programs, NSF sponsors such initiatives as National Sleep Research Fellowships provide young researchers with funds to carry on full-time research in sleep-related fields. ...
However, Jim Horne of Loughborough University, a Sleep Researcher, questions such claims. In a 2004 editorial in the journal Sleep, he notes that available data suggests that the average number of hours per sleep in a 24-hour period has not changed significantly in recent decades. Comparing data collected from the Bureau of Labor Statistics' American Time Use Survey[4] from 1965-1985[5] and 1998-2001,[6] shows that the median amount of sleep, napping, and resting done by the average American has changed by less than 0.7%, from an median of 482 minutes per day from 1965 through 1985, to 479 minutes per day from 1998 through 2001. Furthermore, the editorial suggests that there is a range of normal sleep times required by healthy adults, and many indicators used to suggest chronic sleepiness among the population as a whole do not stand up to scientific scrutiny. Loughborough University is a university located in the market town of Loughborough, Leicestershire in the East Midlands region of the United Kingdom. ...
The Bureau of Labor Statistics was founded in 1884 by President Chester A. Arthur. ...
1965 (MCMLXV) was a common year starting on Friday (the link is to a full 1965 calendar). ...
1985 (MCMLXXXV) was a common year starting on Tuesday of the Gregorian calendar. ...
1998 (MCMXCVIII) was a common year starting on Thursday of the Gregorian calendar, and was designated the International Year of the Ocean. ...
2001 (MMI) was a common year starting on Monday of the Gregorian calendar. ...
Footnotes - ^ "First Biomarker for Human Sleepiness Identified", Record of Washington University of St. Louis, January 25, 2007
- ^ "U.S. Racking Up Huge "Sleep Debt"", National Geographic Magazine, February 24, 2005
- ^ National Sleep Foundation
- ^ Bureau of Labor Statistics' American Time Use Survey
- ^ National Time Use Studies (1965-1985)
- ^ National Time Use Studies (1998 thru 2001)
Washington University in St. ...
January 25 is the 25th day of the year in the Gregorian calendar. ...
This article or section does not cite its references or sources. ...
The National Geographic Magazine, later shortened to National Geographic, is the official journal of the National Geographic Society. ...
February 24 is the 55th day of the year in the Gregorian Calendar. ...
2005 (MMV) was a common year starting on Saturday of the Gregorian calendar. ...
External links - Harvard Magazine article, "Deep into Sleep"
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