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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:
Pharmacodynamics in Geriatric Patients: Effects of Age01:27

Pharmacodynamics in Geriatric Patients: Effects of Age

Age-related pharmacokinetic changes are extensively documented, but understanding age-related pharmacodynamic alterations is relatively limited. This knowledge gap can be partly attributed to the complexity of developing appropriate measures of drug responses compared to bioanalytical methods for determining drug concentrations.Most information regarding age-related differences in human pharmacodynamics originates from cross-sectional studies. However, these studies assume that observed mean...
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...
Dementia01:30

Dementia

Dementia is a collective term for cognitive disorders primarily affecting memory, thinking, and reasoning. It is not a specific disease but a syndrome, with Alzheimer's disease being the most common cause, accounting for approximately 60-80% of cases. Other types include vascular dementia, Lewy body dementia, and frontotemporal dementia. Dementia affects millions worldwide, particularly older adults, though it is not a normal part of aging.
The progression of dementia is generally gradual.
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...
Drug Dosing: Geriatric Patients01:15

Drug Dosing: Geriatric Patients

Elderly individuals encompass a diverse population with varying degrees of age-related physiological changes. Defining the elderly presents challenges, as the geriatric population is often arbitrarily categorized as individuals older than 65. However, many individuals in this group lead active and healthy lives, with an increasing number surpassing 85 years and falling into the older elderly category. Physiological changes associated with aging impact performance capacity and homeostatic...

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Related Experiment Video

Updated: Jun 15, 2026

High-Throughput Small Molecule Drug Screening For Age-Related Sleep Disorders Using Drosophila melanogaster
05:59

High-Throughput Small Molecule Drug Screening For Age-Related Sleep Disorders Using Drosophila melanogaster

Published on: October 20, 2023

Sleep disorders in aging and dementia.

S Bombois1, P Derambure, F Pasquier

  • 1Center for Memory Resources and Research, EA2691, Lille University Hospital, University of Lille Nord de France, Lille cedex, France. stephanie.bombois@chru-lille.fr

The Journal of Nutrition, Health & Aging
|March 2, 2010
PubMed
Summary
This summary is machine-generated.

Sleep disorders are common in older adults and those with cognitive impairment, increasing dementia risk and mortality. Early characterization and treatment of sleep issues are crucial for managing dementia and supporting caregivers.

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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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Multi-Modal Home Sleep Monitoring in Older Adults
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Multi-Modal Home Sleep Monitoring in Older Adults

Published on: January 26, 2019

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Last Updated: Jun 15, 2026

High-Throughput Small Molecule Drug Screening For Age-Related Sleep Disorders Using Drosophila melanogaster
05:59

High-Throughput Small Molecule Drug Screening For Age-Related Sleep Disorders Using Drosophila melanogaster

Published on: October 20, 2023

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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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Multi-Modal Home Sleep Monitoring in Older Adults
07:40

Multi-Modal Home Sleep Monitoring in Older Adults

Published on: January 26, 2019

Area of Science:

  • Gerontology
  • Neurology
  • Sleep Medicine

Background:

  • Sleep disturbances and circadian rhythm modifications are more frequent in aging populations.
  • While many older adults report poor sleep, true sleep disorders are less common and often linked to comorbidities.
  • Sleep disorders in Alzheimer's disease (AD) patients mirror those in non-demented elderly but are more severe.

Purpose of the Study:

  • To review sleep disorder characteristics in individuals at higher risk for dementia: elderly adults, mild cognitive impairment (MCI) patients, and those with neurodegenerative diseases.
  • To explore the relationship between sleep disorders and dementia progression, including potential predictive roles.
  • To consider treatment guidelines for sleep disorders in elderly and demented populations.

Main Methods:

  • Literature review of sleep disorders in at-risk populations.
  • Analysis of prevalence and characteristics of primary sleep disorders (e.g., REM sleep behavior disorder, sleep apnea) in aging and neurodegenerative conditions.
  • Consideration of diagnostic approaches, including polysomnography.

Main Results:

  • Prevalence of sleep disorders like Rapid Eye Movement (REM) sleep behavior disorders (RBDs) and sleep apnea increases with age and in neurodegenerative diseases.
  • RBDs are indicative of Lewy body dementia and predict neurodegeneration in Parkinson's disease.
  • Obstructive sleep apnea (OSA) shares risk factors with AD and may be implicated in its pathology.

Conclusions:

  • Poor sleep significantly increases morbidity and mortality in demented patients and stresses caregivers.
  • Sleep disorders may be early predictors of dementia progression or symptoms of undiagnosed sleep issues in MCI.
  • Thorough sleep characterization, using standardized interviews and polysomnography, is recommended for frail elderly and early-stage AD patients.