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Related Concept Videos

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.
Multiple factors contribute...
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...
Insufficient Sleep and Sleep Deprivation01:13

Insufficient Sleep and Sleep Deprivation

Insufficient sleep refers to not getting the recommended amount of sleep for optimal functioning, even if it's just slightly less than needed. Sleep insufficiency may occur due to lifestyle choices, such as staying up late for social events or work, resulting in routinely getting less sleep than required. For example, consistently sleeping 6 hours when the body needs 7-9 hours can lead to cumulative effects on health and well-being.
Sleep deprivation is a more severe form of sleep loss...
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...

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Related Experiment Video

Updated: Jun 22, 2026

A Chronic Sleep Fragmentation Model using Vibrating Orbital Rotor to Induce Cognitive Deficit and Anxiety-Like Behavior in Young Wild-Type Mice
06:23

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[Insomnia].

Poul Jennum1, Klaus Martiny, Per Bech

  • 1Dansk Center for Søvnmedicin, Klinisk Neurofysiologisk Afdeling, Glostrup Hospital, DK 2600 Glostrup. poje@glo.regionh.dk

Ugeskrift for Laeger
|June 3, 2009
PubMed
Summary
This summary is machine-generated.

Insomnia involves poor sleep quality and difficulty sleeping due to complex causes. Management focuses on cognitive therapy and lifestyle changes, not long-term medication.

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Area of Science:

  • Sleep Medicine
  • Neuroscience
  • Psychiatry

Context:

  • Insomnia is characterized by difficulties with sleep initiation and maintenance, affecting sleep quality.
  • Its causes are multifactorial, involving physiological and entrained factors linked to various disorders.
  • The pathophysiology of insomnia is increasingly recognized as a significant element.

Purpose:

  • To review the complex etiology and pathophysiology of insomnia.
  • To outline current management strategies for psychophysiological insomnia.

Summary:

  • Insomnia encompasses diverse sleep complaints, including issues with sleep onset, maintenance, duration, and quality.
  • The underlying causes are complex, stemming from psychiatric, neurological, and medical conditions, with pathophysiology playing a crucial role.
  • Effective management primarily involves cognitive behavioral therapy and lifestyle adjustments.

Impact:

  • Highlights the limited role of medical treatments, particularly chronic hypnotic use, in managing psychophysiological insomnia.
  • Emphasizes the importance of understanding the pathophysiological underpinnings for improved insomnia treatment.
  • Provides a concise overview for clinicians and researchers on current insomnia management paradigms.