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Related Concept Videos

Sleep-Wake Cycles01:24

Sleep-Wake Cycles

Sleep is an essential physiological process vital to maintaining overall well-being. The reticular activating system (RAS), a network of neurons in the brainstem, regulates wakefulness and sleep. While it may seem passive, sleep consists of distinct cycles, each with its unique characteristics and functions. Two key sleep phases are non-rapid eye movement (NREM) and  rapid eye movement (REM).
NREM Sleep
NREM sleep comprises four progressive stages that seamlessly merge:
Narcolepsy01:07

Narcolepsy

Narcolepsy is a chronic sleep disorder characterized by pervasive, uncontrolled sleepiness and other sleep disturbances. One of its hallmark symptoms is an abrupt transition to REM sleep upon falling asleep, which causes symptoms typically associated with this phase to occur unexpectedly during wakefulness. These include the following symptoms, which typically last from a minute or two to half an hour.
REM Sleep Behavior Disorder01:15

REM Sleep Behavior Disorder

REM Sleep Behavior Disorder (RBD) is a sleep disorder characterized by the absence of muscle paralysis that normally occurs during the REM phase of sleep. This absence allows individuals to physically act out their dreams, which are often vivid and disturbing. Common behaviors exhibited during episodes include kicking, punching, and yelling. These actions can be dangerous, potentially leading to injuries for the person with RBD or their bed partner.
RBD is significantly associated with...
Sleepwalking and Sleep Talking01:17

Sleepwalking and Sleep Talking

Somnambulism, commonly known as sleepwalking, involves individuals engaging in activities ranging from simple walking to more complex behaviors such as driving. Sleepwalking typically occurs during the slow-wave sleep stages 3 and 4 early in the night when the person is not dreaming, contradicting the myth that sleepwalkers are acting out their dreams.
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Management of Insomnia01:19

Management of Insomnia

The sleep cycle, an integral part of human health, consists of several stages with distinct characteristics and functions. It begins with a transition from wakefulness to sleep, known as the light sleep phase, followed by the restorative deep sleep phase, essential for physical recovery and growth. The cycle concludes with the Rapid Eye Movement (REM) phase, characterized by high brain activity and vivid dreaming. Insomnia, a prevalent sleep disorder, involves difficulty falling asleep, staying...
Insomnia01:27

Insomnia

Insomnia is a prevalent sleep disorder characterized by difficulty falling asleep, frequent awakenings during the night, and waking up too early without being able to return to sleep. People with insomnia often experience these disruptions at least three nights a week for at least one month. Chronic insomnia, which lasts for at least three months, can lead to increased anxiety, which in turn can worsen sleep difficulties, creating a cycle of sleeplessness and stress.
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Classification of sleep disorders.

Michael J Thorpy1

  • 1Montefiore Medical Center and the Albert Einstein College of Medicine, Bronx, New York, NY, USA. thorpy@aecom.yu.edu

Neurotherapeutics : the Journal of the American Society for Experimental Neurotherapeutics
|September 15, 2012
PubMed
Summary
This summary is machine-generated.

Sleep disorder classification aids diagnosis and treatment. The International Classification of Sleep Disorders, version 2, integrates symptoms, pathophysiology, and body systems for better differentiation.

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Area of Science:

  • Sleep Medicine
  • Medical Classification Systems

Background:

  • Accurate sleep disorder classification is crucial for understanding symptoms, causes, and pathophysiology, guiding appropriate treatment.
  • Early classification systems relied on symptoms (insomnia, excessive sleepiness, abnormal events), lacking pathophysiological basis due to unknown causes.

Purpose of the Study:

  • To explain the necessity of evolving sleep disorder classification systems.
  • To highlight the structure and utility of the International Classification of Sleep Disorders, version 2 (ICSD-2).

Main Methods:

  • Review of historical and current sleep disorder classification methodologies.
  • Analysis of the structure of the International Classification of Sleep Disorders, version 2, focusing on its integration of symptomatic, pathophysiological, and system-based approaches.

Main Results:

  • The International Classification of Sleep Disorders, version 2, combines symptom-based categories with pathophysiology and body system organization.
  • This hybrid approach accommodates the diverse nature of sleep disorders and the incomplete understanding of their pathophysiology.

Conclusions:

  • The International Classification of Sleep Disorders, version 2, provides essential diagnostic and epidemiological data.
  • This classification system facilitates differentiation between various sleep disorders, improving clinical management.