Sleep, REM

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. About 20% of sleep is REM sleep. If you sleep 7-8 hours a night, perhaps an hour and half of that time, 90 minutes, is REM sleep. REM sleep is characterized by a number of other features including rapid, low-voltage brain waves detectable on the electroencephalographic (EEG) recording, irregular breathing and heart rate and involuntary muscle jerks.

Medical dictionary. 2011.

Look at other dictionaries:

  • Sleep (non-human) — Sleep in non human animals refers to how the behavioral and physiological state of sleep, mainly characterized by reversible unconsciousness, non responsiveness to external stimuli, and motor passivity, appears in different categories of animals …   Wikipedia

  • REM (Rapid Eye Movement) Sleep —    REM sleep is the lightest of the various sleep stages and is characterized by rapid movement of the eyeballs back and forth. Its existence was discovered by Eugene Aserinsky (1921–1998), a graduate student in the physiology laboratory of… …   Historical dictionary of Psychiatry

  • 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… …   Medical dictionary

  • Sleep disorder — Classification and external resources ICD 10 F51, G47 ICD 9 …   Wikipedia

  • Sleep, rapid eye movement — 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 …   Medical dictionary

  • Sleep induction — Sleep induction, the deliberate effort to bring on sleep by various techniques or medicinal means, is practiced to lengthen periods of sleep, increase the effectiveness of sleep, and to reduce or prevent insomnia. Contents 1 Alcohol 2 Guided… …   Wikipedia

  • REM sleep — [ˈrem sli:p] n [U] technical [Date: 1900 2000; Origin: rapid eye movement] rapid eye movement sleep a period during sleep when your eyes move quickly, when you are dreaming …   Dictionary of contemporary English

  • REM sleep — [ rem ,slip ] noun uncount a stage of sleep during which you dream and your eyes make small quick movements. REM is an abbreviation for rapid eye movement …   Usage of the words and phrases in modern English

  • sleep — sleepful, adj. sleeplike, adj. /sleep/, v., slept, sleeping, n. v.i. 1. to take the rest afforded by a suspension of voluntary bodily functions and the natural suspension, complete or partial, of consciousness; cease being awake. 2. Bot. to… …   Universalium

  • Sleep — Waking up redirects here. For other uses, see Waking Up (disambiguation). This article is about sleep in general; for specifically non human sleep see Sleep (non human); for other uses, see Sleep (disambiguation). Sleeping child Sleep is a… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.