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 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.

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  • rapid eye movement sleep — noun a recurring sleep state during which dreaming occurs; a state of rapidly shifting eye movements during sleep • Syn: ↑paradoxical sleep, ↑REM sleep, ↑rapid eye movement, ↑REM • Hypernyms: ↑sleep, ↑slumber * * * …   Useful english dictionary

  • rapid eye movement — noun a recurring sleep state during which dreaming occurs; a state of rapidly shifting eye movements during sleep • Syn: ↑paradoxical sleep, ↑rapid eye movement sleep, ↑REM sleep, ↑REM • Hypernyms: ↑sleep, ↑slumber …   Useful english dictionary

  • Rapid eye movement (sleep) — Rapid eye movement (REM) sleep is a normal stage of sleep characterized by rapid movements of the eyes. REM sleep is classified into two categories: tonic and phasic. [cite book|author=Kryger M, Roth T, Dement W|title=Principles amp; Pracitces of …   Wikipedia

  • 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… …   Medical dictionary

  • Rapid eye movement — may refer to: *Rapid eye movement sleep or REM sleep *Saccade, a fast movement of an eye * Rapid Eye Movement (album), an album by Riverside …   Wikipedia

  • Rapid eye movement behavior disorder — Infobox Disease Name = PAGENAME Caption = DiseasesDB = ICD10 = ICD9 = ICDO = OMIM = MedlinePlus = eMedicineSubj = eMedicineTopic = MeshID = D020447 Rapid eye movement sleep behaviour disorder (RBD) is a sleep disorder (more specifically a… …   Wikipedia

  • Sleep, non-rapid eye movement — NREM (non rapid eye movement) sleep is dreamless sleep. During NREM, the brain waves on the electroencephalographic (EEG) recording are typically slow and of high voltage, the breathing and heart rate are slow and regular, the blood pressure is… …   Medical dictionary

  • Rapid Eye Movement — Als REM Schlaf (REM, engl. Rapid Eye Movement; auch paradoxer Schlaf oder desynchronisierter Schlaf) wird eine Schlafphase bezeichnet, die unter anderem durch schnelle Augenbewegungen gekennzeichnet ist. Weitere Merkmale sind ein niedriger Tonus… …   Deutsch Wikipedia

  • Rapid eye movement sleep behaviour disorder — Die Rapid eye movement sleep behaviour disorder (RBD) gehört zur Gruppe der Parasomnien und ist die am besten studierte mit der REM Phase assoziierte Parasomnie. RBD zeichnet sich durch den Verlust der herkömmlichen Atonie im REM Schlaf, welche… …   Deutsch Wikipedia

  • rapid eye movement — n. American rock group REM (rapid eye movement) n. phase of sleep during which dreams occur and the eyes move within the socket …   English contemporary dictionary

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