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Knowledge Identifier: $Sleep



Naturally recurring state characterized by altered consciousness, relatively inhibited sensory activity, and inhibition of nearly all voluntary muscles add

Category: Sciences

Launched in 1968.

Countries: (67%), Europe (33%)

Linked to: Stanford University, University College London, University of California, San Diego, University of Warwick




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The staging criteria were standardized in 1968 by Allan Rechtschaffen and Anthony Kales in the "R&K sleep scoring manual add something


Original Publication: 1 December 2000, Updated: 1 December 2007 add something


In 2004, the AASM commissioned the AASM Visual Scoring Task Force to review the R&K scoring system add something


Alarm clocks involving "sleep stage monitoring" appeared on the market in 2005 add something


According to 2007 AASM standards, NREM consists of three stages add something


The revised scoring was published in 2007 as "The AASM Manual for the Scoring of Sleep and Associated Events" add something


A 2010 review of published scientific research suggested that exercise generally improves sleep for most people, and helps sleep disorders such as insomnia add something


A study in the Western Journal of Nursing Research in 2011 compared how sleep quality was affected by four different diets: a high protein diet, a high fat diet, a high carbohydrate diet, and a control diet add something


A publication by L. Xie and colleagues in 2013 explored the efficiency of the glymphatic system during sleep and provided the first direct evidence that the clearance of interstitial waste products increases during the resting state add something


A 2014 study found that depriving mice of sleep increased cancer growth and dampened the immune system's ability to control cancers add something


One 2016 review indicated that a high carbohydrate diet promoted shorter onset to sleep and longer duration sleep than a high fat diet add something