Rapid eye movement (REM) sleep is a stage of sleep characterized by the rapid and random movement of the eyes. Rapid eye movement sleep is classified into two categories: tonic and phasic. It was identified and defined by Nathaniel Kleitman and his student Eugene Aserinsky in 1953. Criteria for REM sleep includes rapid eye movement, low muscle ton...
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http://en.wikipedia.org/wiki/Rapid_eye_movement_sleep
(from the article `sleep`) REM sleep is a state of diffuse bodily activation. Its EEG patterns (tracings of faster frequency and lower amplitude than in NREM stages 2–4) are at ... Stage 5 sleep is also known as rapid eye movement (REM) sleep because during this stage the eyes begin to move rapidly under the eyelids. Interest in .....
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http://www.britannica.com/eb/a-z/r/13
One of the five stages of sleep. During rapid eye movement sleep, the eyes move rapidly while closed and dreams occur. Rapid eye movement sleep is the lightest stage of sleep, during which a person may wake easily. During several hours of normal sleep, a person will go through several sleep cycles that include rapid eye movement sleep and the 4 sta...
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http://www.cancer.gov/dictionary?expand=R
REM sleep, that state of deep sleep in which rapid eye movements, alert EEG pattern, and dreaming occur; several central and autonomic functions are distinctive during this state. ... (05 Mar 2000) ...
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http://www.encyclo.co.uk/local/20973
REM sleep the period of sleep during which the brain waves are fast and of low voltage, and autonomic activities, such as heart rate and respiration, are irregular. This type of sleep is associated with dreaming, mild involuntary muscle jerks, and rapid eye movements. It usually occurs three to four times each night, at interval...
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http://www.encyclo.co.uk/local/21001
Type: Term Definitions: 1. that state of deep sleep in which rapid eye movements, alert EEG pattern, and dreaming occur; several central and autonomic functions are distinctive during this state.
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http://www.medilexicon.com/medicaldictionary.php?t=82496
Rapid eye movement sleep: Rapid eye movement sleep (REM) sleep is the portion of sleep when there are rapid eye movements (REMs). Dreams occur during REM sleep. We typically have 3 to 5 periods of REM sleep per night. They occur at intervals of 1-2 hours and are quite variable in length. An episode of REM sleep may last 5 minutes or over an hour. A...
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http://www.medterms.com/script/main/art.asp?articlekey=8681
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