Sleep
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In physiology, sleep is a "readily reversible suspension of sensorimotor interaction with the environment, usually associated with recumbency and immobility."[1]
Sleep stages
The stages of sleep include "Stage 1: sleep onset, drowsy sleep; Stage 2: light sleep; Stages 3 and 4: delta sleep, light sleep, deep sleep, telencephalic sleep"[2] and REM sleep. REM sleep is "characterized by rapid movements of the eye and low voltage fast pattern EEG. It is usually associated with dreaming."[3]
Disorders of sleep
Obstructive sleep apnea
Sleep abnormalities and associations with other diseases
Abnormalities of REM sleep such as excessive motor activity are associated with subsequent Parkinson's Disease and Lewy body dementia.[4]
Reduced amount of sleep may be associated with cardiovascular disease such as coronary heart disease and stroke.[5]
References
- ↑ Anonymous (2024), Sleep (English). Medical Subject Headings. U.S. National Library of Medicine.
- ↑ Anonymous (2024), Sleep stages (English). Medical Subject Headings. U.S. National Library of Medicine.
- ↑ Anonymous (2024), REM Sleep stages (English). Medical Subject Headings. U.S. National Library of Medicine.
- ↑ Postuma RB, Gagnon JF, Vendette M, Fantini ML, Massicotte-Marquez J, Montplaisir J (December 2008). "Quantifying the risk of neurodegenerative disease in idiopathic REM sleep behavior disorder". Neurology. DOI:10.1212/01.wnl.0000340980.19702.6e. PMID 19109537. Research Blogging.
- ↑ Eguchi K, Pickering TG, Schwartz JE, et al (November 2008). "Short sleep duration as an independent predictor of cardiovascular events in Japanese patients with hypertension". Arch. Intern. Med. 168 (20): 2225–31. DOI:10.1001/archinte.168.20.2225. PMID 19001199. Research Blogging.