Rapid Eye Movement Sleep
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High Quality Content by WIKIPEDIA articles! Rapid Eye Movement (REM) sleep is a normal stage of sleep characterized by the rapid movement of the eyes. REM sleep is classified into two categories: tonic and phasic. It was identified and defined by Kleitman and Aserinsky in the early 1950s. Criteria for REM sleep includes not only rapid eye movement, but also low muscle tone and a rapid, low voltage EEG; these features are easily discernible in a polysomnogram, the sleep study typically done for patients with suspected sleep disorders. REM sleep in adult humans typically occupies 20?25% of total...
High Quality Content by WIKIPEDIA articles! Rapid Eye Movement (REM) sleep is a normal stage of sleep characterized by the rapid movement of the eyes. REM sleep is classified into two categories: tonic and phasic. It was identified and defined by Kleitman and Aserinsky in the early 1950s. Criteria for REM sleep includes not only rapid eye movement, but also low muscle tone and a rapid, low voltage EEG; these features are easily discernible in a polysomnogram, the sleep study typically done for patients with suspected sleep disorders. REM sleep in adult humans typically occupies 20?25% of total sleep, about 90?120 minutes of a night's sleep. During a normal night of sleep, humans usually experience about four or five periods of REM sleep; they are quite short at the beginning of the night and longer toward the end. Many animals and some people tend to wake, or experience a period of very light sleep, for a short time immediately after a bout of REM.
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