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Topic: REM sleep

Related Topics

Somnolence

Rapid eye movement

Polyphasic sleep

Sleep

Sleep and learning

Sleep spindle

Sleep disorder

Delta wave

Night terror

Hypnagogic hallucination

Dream

Electroencephalography

Hypnosis

Episodic memory

Consciousness

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	Rapid eye movement - Wikipedia, the free encyclopedia
		REM sleep is so physiologically different from the other phases of sleep that the others are collectively referred to as non-REM sleep.
		Physiologically, certain neurons in the brain stem, known as REM sleep-on cells (located in the pontine tegmentum), are particularly active during REM sleep, and are probably responsible for its occurrence.
		REM sleep occurs in all mammals and birds.
	en.wikipedia.org /wiki/REM_sleep (921 words)

	Sleep - Wikipedia, the free encyclopedia
		REM sleep is predominant in the final third of a sleep period; its timing is linked to circadian rhythm and body temperature.
		According to the ontogenetic hypothesis of REM sleep, the activity occurring during neonatal REM sleep (or active sleep) seems to be particularly important to the developing organism (Marks et al., 1995).
		REM sleep appears to help with the consolidation of spatial and procedural memory, while slow-wave sleep helps with the consolidation of declarative memories.
	en.wikipedia.org /wiki/Sleep (2595 words)

	The evolution of REM sleep
		REM sleep amounts decrease with age in altricial mammals and to a lesser extent in precocial mammals.
		The behavioral aspects of REM sleep in the platypus are similar to those in placental and marsupial mammals and particularly to the vigorous phasic activity seen in neonates.
		Electrophysiological and behavioral correlates of wakefulness and sleep in the lizard, Ctenosaura pectinata.
	www.npi.ucla.edu /sleepresearch/rem_evolution.htm (6563 words)

	Brain Basics: Understanding Sleep: National Institute of Neurological Disorders and Stroke (NINDS)
		REM sleep begins with signals from an area at the base of the brain called the pons (see figure 2).
		REM sleep seems to help prevent seizures that begin in one part of the brain from spreading to other brain regions, while deep sleep may promote the spread of these seizures.
		Sleep apnea is a disorder of interrupted breathing during sleep.
	www.ninds.nih.gov /disorders/brain_basics/understanding_sleep.htm (4962 words)

	REM Sleep Diagnostics - Sleep Disorders (Site not responding. Last check: 2007-11-01)
		For many sleep apnea patients, their spouses are the first ones to suspect that something is wrong, usually from their heavy snoring and apparent struggle to breathe.
		Sleep Apnea is a potentially serious condition characterized by the repetitive cessation or reduction of airflow during sleep.
		While many sleep disorders are related to a physical, psychological, or biological condition, some are merely the result of poor sleep hygiene, which refers to a variety of behaviors that can influence the quality or quantity of sleep.
	www.remsleepdiagnostics.com /sleepdisorders.html (1965 words)

	Sleep—Information about Sleep (Site not responding. Last check: 2007-11-01)
		Sleep disorders, including sleep apnea (that is, absence of breathing during sleep), insomnia, and narcolepsy, may require behavioral, pharmacological, or even surgical intervention to relieve the symptoms.
		While REM sleep is turned on and off by the pons (see section 3.3 Sleep and the brain), two areas in the cerebral hemispheres (areas far from the pons that control higher mental functions) regulate dreaming.
		REM sleep and dreaming can be dissociated from one another, as seen after the administration of certain drugs or in cases of brain damage either to the pons (loss of REM sleep but not of dreaming) or to the frontal areas (no dreaming but REM sleep cycle unaffected).
	science.education.nih.gov /supplements/nih3/sleep/guide/info-sleep.htm (8598 words)

	SLEEP SYLLABUS
		REM sleep is usually not subdivided into stages, however, "tonic" and "phasic" aspects of REM sleep are often distinguished.
		These two sleep related phenomena-the loss of the wakefulness drive to breathe, and the decrease of the activity of the muscles responsible for holding the pharyngeal passageway open during inspiration-combine to cause a decrease in ventilation during sleep.
		REM sleep is inhibited throughout the course of infection.
	www.sleephomepages.org /sleepsyllabus/fr-d.html (4878 words)

	Sleep Stages - SleepChannel
		REM sleep is distinguishable from NREM sleep by changes in physiological states, including its characteristic rapid eye movements.
		Because REM is a mixture of encephalic (brain) states of excitement and muscular immobility, it is sometimes called paradoxical sleep.
		The percentage of REM sleep is highest during infancy and early childhood, drops off during adolescence and young adulthood, and decreases further in older age.
	www.sleepdisorderchannel.com /stages (999 words)

	REM Sleep Diagnostics - Huntsville, Texas
		REM Sleep Diagnostics affords residents of the Huntsville, Texas area local access to a modern, state-of-the-art Sleep Clinic and Board Certified Sleep Physicians.
		REM Sleep Diagnostics, through various outreach programs, including this web site, is also involved in educating the general community about Sleep Disorders and promoting the importance of sleep health issues.
		REM Sleep Diagnostics, through various outreach programs, including this web site, is involved in educating the general community about sleep disorders and the importance of sleep health issues.
	www.remsleepdiagnostics.com (546 words)

	REM Sleep Behavior Disorder
		During REM sleep, rapid eye movements occur, breathing becomes irregular, blood pressure rises, and there is loss of muscle tone (paralysis).
		However, the brain is highly active, and the electrical activity recorded in the brain by EEG during REM sleep is similar to that recorded during wakefulness.
		In a person with REM sleep behavior disorder (RBD), the paralysis that normally occurs during REM sleep is incomplete or absent, allowing the person to "act out" his or her dreams.
	www.emedicinehealth.com /rem_sleep_behavior_disorder/article_em.htm (262 words)

	Non-REM SLEEP (Site not responding. Last check: 2007-11-01)
		Non-REM sleep consists of the lighter stages--stage 1 and stage 2--and a deep form of sleep known as Delta (or slow-wave) sleep, which comprises stages 3 and 4.
		It is not known whether REM or delta sleep is deeper, but it generally requires more stimulation to arouse the sleeper from delta sleep.
		Even though REM sleep is a much deeper sleep it is not shown to be any better than Non-REM sleep.
	academic.pg.cc.md.us /~mhspear/sleep/stages/nrsleep.html (567 words)

	Sleep — Detailed explanations of both basic and medical information pertaining to this nightly activity on ...
		During sleep, we usually pass through five phases of sleep: stages 1, 2, 3, 4, and REM (rapid eye movement) sleep.
		These stages progress in a cycle from stage 1 to REM sleep, then the cycle starts over again with stage 1.
		Since sleep and wakefulness are influenced by different neurotransmitter signals in the brain, foods and medicines that change the balance of these signals affect whether we feel alert or drowsy and how well we sleep.
	www.medicinenet.com /sleep/article.htm (1029 words)

	REM sleep definition - Medical Dictionary definitions of popular medical terms
		REM sleep: REM sleep is the portion of sleep when there are rapid eye movements (REMs).
		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.
		Sleep - Learn the specifics of human brain activity during sleep, sleep stages (REM sleep etc...), how much sleep we need, what sleep does for us, sleep disorders and diseases, as well as tips to a better nights sleep.
	www.medterms.com /script/main/art.asp?articlekey=8677 (311 words)

	REM Behavior Disorder (RBD) - SleepChannel
		The basic mechanism for REM sleep paralysis is found in the brainstem, the part of the brain that connects the spinal chord to the cerebral hemispheres and that consists of the pons, midbrain, and the medulla oblongata.
		Physicians and sleep technicians hypothesize that the brain naturally and purposely prevents motor activity during REM sleep to ensure restful, inactive sleep during the most electrically active stage of sleep.
		In this context, sleep paralysis describes a normal state of sleep, unlike sleep paralysis experienced in narcolepsy, which affects people while they are trying to stay awake.
	www.sleepdisorderchannel.com /rem (595 words)

	eMedicine - REM Sleep Behavior Disorder : Article by ABM Salah Uddin, MD
		According to the International Classification of Sleep Disorders, the minimal diagnostic criteria include movements of the body or limbs associated with dreaming and at least one of the following criteria: potentially harmful sleep behavior, dreams that appear to be acted out, and sleep behavior that disrupts sleep continuity (American Sleep Disorders Association, 1997).
		In experimental studies in cats, bilateral pontine lesions resulted in a persistent absence of REM atonia associated with prominent motor activity during REM sleep similar to that observed in RBD in humans.
		The presenting complaint is violent dream-enacting behaviors during REM sleep, often causing self-injury or injury to the bed partner.
	www.emedicine.com /neuro/topic524.htm (2529 words)

	The Stages of Sleep
		Most importantly, lucid dreams occur in the 5th stage of sleep, known as the REM (Rapid Eye Moment) stage (note: REM is read as a word, not as each individual letter).
		As the name alludes to, the most profound discernible characteristic of REM sleep is the bursts of rapid eye movement while dreaming.
		The length of the stages is not static, however: as the night proceeds, the length of stages 3 and 4 (also called delta or deep sleep) begins to wane, and the length of REM sleep increases, up to about one hour in length after a number of cycles.
	www.dreamviews.com /sleepstages.php (529 words)

	National Sleep Foundation
		Fact Sheet on Periodic Limb Movements in Sleep
		Sleep Aids: All You Ever Wanted to Know...but Were Too Tired to Ask
		REM Behavior Disorder: When Your Dreams Become Real
	www.sleepfoundation.org /sleeplibrary/index.php?secid=&id=67 (53 words)

	REM Sleep And Vestibular Neuritis (Site not responding. Last check: 2007-11-01)
		last REM episode of nocturnal sleep, and finally during the alert
		contrast, during REM sleep the patients with vestibular neuritis
		pattern in REM was the same for patients and
	www.indegene.com /Neu/Home/indNeu_Ind_News_11-09-2001_2.asp (159 words)

	eMedicine - REM Sleep Behavior Disorder : Article Excerpt by: ABM Salah Uddin, MD (Site not responding. Last check: 2007-11-01)
		Synonyms, Key Words, and Related Terms: rapid eye movement sleep behavior disorder, REM parasomnias, REM sleep parasomnia, RBD, sleep disorder, REM sleep
		Please click here to view the full topic text: REM Sleep Behavior Disorder
		Results were similar to the functional studies such as perfusion and metabolic impairment pattern observed in diffuse Lewy body (DLB) disease and to some extent in Parkinson disease.
	www.emedicine.com /neuro/byname/rem-sleep-behavior-disorder.htm (599 words)

	REM Sleep Behavior Disorder
		REM Behavior Disorder: When Your Dreams Become Real National Sleep Foundation
		NOAH > Sleep Disorders > Specific Disorders & Problems > REM Sleep Behavior Disorder
		All medical information needs to be carefully reviewed with your health care provider.
	www.noah-health.org /en/sleep/specific/rem.html (96 words)

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