Related Experiment Video
Updated: Jan 8, 2026
10:57
Determining Soil-transmitted Helminth Infection Status and Physical Fitness of School-aged Children
Published on: August 22, 2012
24.2K
Public Health.
Dharmendra Gurve1,2, Andrew Peter Centen1,2, Penelope J Slack3
1University of Toronto, Toronto, ON, Canada.
Alzheimer'S & Dementia : the Journal of the Alzheimer'S Association
|December 23, 2025
Summary
Sleep quality, particularly REM sleep, is crucial for cognitive resilience in older adults at high risk for dementia. Specific EEG sleep features like REM theta power and NREM delta power may support daily cognitive function and serve as therapeutic targets.
Area of Science:
- Neuroscience
- Sleep Medicine
- Cognitive Aging
Background:
- Older adults exhibit significant daily fluctuations in cognitive function.
- Sleep is hypothesized to play a role in maintaining cognitive stability.
- Identifying specific sleep characteristics linked to cognitive resilience is important.
Purpose of the Study:
- To investigate the relationship between sleep features and day-to-day cognitive variability in older adults at high risk for dementia.
- To determine which electroencephalogram (EEG) sleep parameters are most influential in supporting cognitive resilience.
Main Methods:
- Utilized ambulatory overnight EEG and multi-day app-based cognitive testing from 149 high-risk adults in the Brain Health Pro (BHPro) study.
- Analyzed automated sleep staging, calculating frontal NREM delta power and REM theta power.
- Employed linear mixed-effect models to correlate previous night's sleep measures with subsequent morning cognitive performance.
Main Results:
- Increased percentage of REM sleep and higher relative REM theta power were significantly associated with better next-morning cognitive performance.
- NREM delta power showed a non-significant positive association with cognitive performance.
- These sleep-brain associations were more pronounced in individuals with mild cognitive impairment.
Conclusions:
- REM sleep theta power and NREM delta power may be key electrophysiologic markers supporting daily cognitive function in older adults at high dementia risk.
- These sleep parameters, especially in individuals with mild cognitive impairment, represent potential therapeutic targets for enhancing cognitive resilience.
More Related Videos
09:33Visualizing Field Data Collection Procedures of Exposure and Biomarker Assessments for the Household Air Pollution Intervention Network Trial in India
Published on: December 23, 2022
2.6K
07:20Dried Blood Spot Collection of Health Biomarkers to Maximize Participation in Population Studies
Published on: January 28, 2014
37.1K
Related Concept Videos
01:30Primary Healthcare Services
1.9K
Primary care promotes wellness and prevents disease. This care includes health promotion, education, protection (such as immunizations), early disease screening, and environmental considerations. Settings providing this type of healthcare include physician offices, public health clinics, school nursing, and community health nursing.
In 1978, international leaders convened in Alma-Ata, Kazakhstan, for what would be a pivotal event in global health. The Alma-Ata Declaration was the first to call...
In 1978, international leaders convened in Alma-Ata, Kazakhstan, for what would be a pivotal event in global health. The Alma-Ata Declaration was the first to call...
1.9K
01:26Levels of Health Promotion and Illness Prevention
14.1K
Health promotion allows a person to control the determinants of health, resulting in an improved health status. It enhances the quality of life and reduces premature deaths. Health promotion and illness prevention programs help people make beneficial choices to reduce the risk of disease and disabilities. There are three health promotion and illness prevention levels: primary, secondary, and tertiary prevention.
In primary prevention, actions taken before disease onset prevent the disease from...
In primary prevention, actions taken before disease onset prevent the disease from...
14.1K
01:30Preventive Healthcare Services
1.8K
Preventive healthcare services keep people healthy via frequent check-ups, screening, and counseling. They primarily aid in disease prevention rather than treating an acute or chronic illness. Preventive treatment also keeps individuals productive and energetic, allowing them to work well into their retirement years. Examples of preventive care services include:
1.8K
01:26Principles of Disease Surveillance
439
Disease surveillance is the systematic collection, analysis, and interpretation of health data essential to the planning, implementation, and evaluation of public health practice. This process integrates data dissemination to entities responsible for preventing and controlling disease, injury, and disability. Surveillance systems provide crucial information for action, helping public health authorities make informed decisions to manage and prevent outbreaks, ensure public safety, optimize...
439
01:17Healthcare Agencies II
1000
There are various healthcare agencies in the United States—some of which are managed by religious institutions and others by different government branches.
Parish nursing is a growing specialty nursing profession that focuses on holistic healthcare, health promotion, and illness prevention. It blends professional nursing practice with a health ministry, focusing on health and healing within the context of a Christian community. Parish nurses serve as health educators, referral sources,...
Parish nursing is a growing specialty nursing profession that focuses on holistic healthcare, health promotion, and illness prevention. It blends professional nursing practice with a health ministry, focusing on health and healing within the context of a Christian community. Parish nurses serve as health educators, referral sources,...
1000
01:26Methods Of Healthcare Delivery System
3.9K
At the different levels of the healthcare system, we see varying methods of healthcare used. These methods include managed care systems, case management, and primary healthcare.
Managed Care System:
The managed care system is designed to control the cost while maintaining the quality of care. The patient's care from admission to discharge is planned by the primary care provider or the case manager, also known as the gatekeeper. In a managed care system, the number of care providers is...
Managed Care System:
The managed care system is designed to control the cost while maintaining the quality of care. The patient's care from admission to discharge is planned by the primary care provider or the case manager, also known as the gatekeeper. In a managed care system, the number of care providers is...
3.9K