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Related Concept Videos

REM Sleep Behavior Disorder01:15

REM Sleep Behavior Disorder

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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.
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Sleep-Wake Cycles01:24

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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).
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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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Nightmares and Night Terrors01:18

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Nightmares and night terrors represent two distinct types of sleep disturbances that differ in timing, characteristics, and the sleeper's recall of the event. Nightmares are vivid, disturbing dreams that usually awaken the sleeper from REM sleep, a stage of sleep where brain activity is high, and dreams are most frequent. Upon awakening, individuals often have detailed recollections of their nightmares, which can include themes of threats to survival, security, or self-esteem.
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Post-traumatic Stress Disorder01:27

Post-traumatic Stress Disorder

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Post-traumatic stress disorder (PTSD) is a psychiatric condition that arises following exposure to traumatic events such as natural disasters, forced displacement, or severe accidents. It significantly impairs individuals' ability to cope with daily activities and disrupts their emotional and psychological equilibrium.
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Substance Use Disorders Affecting Sleep01:24

Substance Use Disorders Affecting Sleep

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Substance use disorders involve a pattern of using drugs more extensively than intended and continuing use despite harmful consequences. This includes legal substances like alcohol and nicotine, as well as illegal drugs. These disorders often involve both physical and psychological dependence, reflecting compulsive use of substances that significantly alter thoughts, feelings, and behaviors, contributing to a major public health issue.
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Related Experiment Video

Updated: Oct 30, 2025

Assessing Changes in Synaptic Plasticity Using an Awake Closed-Head Injury Model of Mild Traumatic Brain Injury
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Sleep disorders in traumatic brain injury.

Igor Paredes1, Blanca Navarro2, Alfonso Lagares1

  • 1Servicio de Neurocirugía, Hospital Universitario 12 de Octubre, Madrid, Spain.

Neurocirugia (English Edition)
|July 5, 2021
PubMed
Summary

Sleep disorders are common after traumatic brain injury (TBI), affecting 30-84% of patients. Early diagnosis and integrated treatment are crucial for improving outcomes in TBI survivors with sleep disturbances.

Keywords:
Anatomia del sueñoHipersomniaHipocretinas.HypersomnolenceHypocretines.InsomniaInsomnioSleep anatomySleep disorderTrastorno del sueñoTraumatic brain injuryTraumatismo craneoencefálico

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Area of Science:

  • Neurology
  • Sleep Medicine
  • Traumatology

Background:

  • Sleep disorders are highly prevalent following traumatic brain injury (TBI), impacting 30-84% of affected individuals.
  • Specific sleep disturbances vary with TBI severity: insomnia and circadian rhythm disorders are common in mild TBI, while hypersomnolence is more frequent in moderate to severe TBI.

Purpose of the Study:

  • To review current literature on sleep mechanisms and disorders post-TBI.
  • To discuss prevalent sleep conditions, their treatments, and future research directions.

Main Methods:

  • Systematic literature review of studies on sleep disorders and traumatic brain injury.
  • Analysis of epidemiological data and treatment evidence.

Main Results:

  • Insomnia and circadian rhythm disorders are frequent in mild TBI; hypersomnolence disorders are more common in moderate/severe TBI.
  • Obstructive sleep apnea and restless leg syndrome are also prevalent, particularly in veterans with multiple TBIs.

Conclusions:

  • Sleep disorder diagnosis and treatment should be integrated into routine TBI care.
  • Further research is needed to establish optimal therapeutic strategies for sleep disturbances in TBI patients.