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Related Concept Videos

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:
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.
Factors that increase the likelihood of sleepwalking include sleep deprivation and alcohol consumption. Contrary to common beliefs, it is safe...
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.
Sleep Apnea01:21

Sleep Apnea

Sleep apnea is a condition where breathing stops intermittently during sleep, often leading to significant health issues. Each episode can last from 10 to 20 seconds or more and is frequently accompanied by a brief arousal from sleep. This disturbance, largely unnoticed by the individual, can lead to severe daytime fatigue. Commonly, individuals seek help after being informed by their partners about loud snoring and noticeable breathing pauses during sleep.
The condition is more prevalent among...
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...

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Collecting Sleep, Circadian, Fatigue, and Performance Data in Complex Operational Environments
08:36

Collecting Sleep, Circadian, Fatigue, and Performance Data in Complex Operational Environments

Published on: August 8, 2019

Sleep loss and sleepiness: current issues.

Thomas J Balkin1, Tracy Rupp1, Dante Picchioni1

  • 1Department of Behavioral Biology, Walter Reed Army Institute of Research, Silver Spring, MD.

Chest
|September 10, 2008
PubMed
Summary
This summary is machine-generated.

Sleep loss impairs cognitive function, metabolism, and poses public health risks. Chronic sleep restriction leads to slow recovery, with individual sleep needs influenced by genetics.

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Last Updated: Jul 1, 2026

Collecting Sleep, Circadian, Fatigue, and Performance Data in Complex Operational Environments
08:36

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Published on: August 8, 2019

Establishing a Device for Sleep Deprivation in Mice
05:05

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

  • Neuroscience
  • Public Health
  • Metabolic Science

Background:

  • Growing awareness of sleep loss consequences on public health and safety.
  • Sleep loss impairs a wide range of cognitive and psychomotor functions.
  • Sleep deprivation may contribute to obesity and related metabolic issues.

Purpose of the Study:

  • To review the broad consequences of sleep loss.
  • To discuss the subjective habituation to chronic sleep restriction.
  • To highlight individual differences in sleep needs.

Main Methods:

  • Literature review of sleep deprivation studies.
  • Analysis of cognitive, psychomotor, and metabolic effects.
  • Discussion of subjective adaptation and individual variability.

Main Results:

  • Sleep loss degrades performance and alertness, even with subjective habituation to chronic partial sleep loss.
  • Recovery from chronic sleep restriction is notably slow.
  • Individual differences in habitual sleep duration are significant and influenced by factors like genetic polymorphisms.

Conclusions:

  • Chronic sleep restriction is prevalent and recovery is prolonged.
  • Understanding individual sleep needs is crucial for public health.
  • Genetic factors play a role in determining habitual sleep duration.