The Physiology of Normal Sleep.
10.7599/hmr.2013.33.4.190
- Author:
Dae Lim KOO
1
;
Juhan KIM
Author Information
1. Department of Neurology, Seoul National University Boramae Medical Center, Seoul, Korea. koodaelim@gmail.com
- Publication Type:Review
- Keywords:
Sleep;
Physiology;
Circadian Rhythm;
Neurobiology
- MeSH:
Aging;
Circadian Rhythm;
Eye Movements;
Muscles;
Neurobiology;
Physiology*;
Sleep Stages;
Sleep, REM
- From:Hanyang Medical Reviews
2013;33(4):190-196
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
Sleep is a highly organized and complicated state that is fundamental to life. We have an absolute need to sleep during about one-third of our lives. There are two types of sleep, non-rapid eye movement (NREM) and rapid eye movement (REM) sleep. NREM sleep is divided into stages 1, 2, and 3 which is representing a degree of relative depth in sleep. Each sleep stage shows unique features including some variations in electroencephalographic waves, eye movements, and muscle tone. Although sleep pattern changes are associated with aging, how sleep physiology and sleep patterns change over an individual's life span is not well-defined. Circadian rhythms, which are the daily rhythms in physiology and behavior, regulate the sleep-wake cycle. Comprehensive understanding of normal sleep physiology should be very important to better understand not only the effects of sleep related diseases but also the impacts of pathological sleep on various diseases of other systemic organs. This review aims to enhance knowledge focused on normal sleep physiology and its regulation.
