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Related Concept Videos

Insomnia01:27

Insomnia

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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...
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Management of Insomnia01:19

Management of Insomnia

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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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Cognitive Dissonance01:38

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Social psychologists have documented that feeling good about ourselves and maintaining positive self-esteem is a powerful motivator of human behavior (Tavris & Aronson, 2008). In the United States, members of the predominant culture typically think very highly of themselves and view themselves as good people who are above average on many desirable traits (Ehrlinger, Gilovich, & Ross, 2005). Often, our behavior, attitudes, and beliefs are affected when we experience a threat to our...
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Aging01:26

Aging

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Aging is a complex biological phenomenon influenced by various processes that affect cellular and systemic functions. Several prominent theories attempt to explain its mechanisms, highlighting cellular limitations, oxidative damage, and hormonal changes as central factors in aging.
Cellular Clock Theory
The cellular clock theory posits that the human lifespan is closely tied to the finite capacity of cells to divide, a phenomenon governed by telomeres, which are protective caps at the ends of...
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Dietary Connections01:23

Dietary Connections

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In biological systems, most metabolic pathways are interconnected. The cellular respiration processes that convert glucose to ATP—such as glycolysis, pyruvate oxidation, and the citric acid cycle—tie into those that break down other organic compounds. As a result, various foods—from apples to cheese to guacamole—end up as ATP. In addition to carbohydrates, food also contains proteins and lipids—such as cholesterol and fats. All of these organic compounds are used...
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Functions of Connective Tissues01:17

Functions of Connective Tissues

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Connective tissues perform a broad range of functions in the body. Their primary function is to connect and link different tissues in the body and act as packaging material between tissues. The areolar tissue, a connective tissue prototype, commonly cements various tissue types in diverse body organs. In contrast, adipose tissue cushions internal organs while insulating the body from heat loss.
Hard connective tissues, such as bones and cartilage, provide structure and support to the body.
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Related Experiment Video

Updated: Jan 23, 2026

A Method for Investigating Age-related Differences in the Functional Connectivity of Cognitive Control Networks Associated with Dimensional Change Card Sort Performance
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Connections Between Insomnia and Cognitive Aging.

Claire E Sexton1,2, Konstantina Sykara3, Elissaios Karageorgiou1,3

  • 1Global Brain Health Institute, Memory and Aging Center, Department of Neurology, University of California, San Francisco, CA, USA.

Neuroscience Bulletin
|June 22, 2019
PubMed
Summary
This summary is machine-generated.

Insomnia in older adults may impact cognitive health, increasing dementia risk and affecting brain structure. More research is needed, but treating insomnia might improve cognitive function.

Keywords:
CognitionDementiaInsomniaSleep

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Area of Science:

  • Gerontology
  • Neuroscience
  • Sleep Medicine

Background:

  • Insomnia is prevalent in older adults, posing risks to physical and mental well-being.
  • The link between insomnia and cognitive health, including dementia risk, remains unclear.

Purpose of the Study:

  • To review evidence on insomnia's association with cognitive performance, brain structure, and dementia risk.
  • To explore the impact of insomnia treatment on cognitive outcomes in older adults.

Main Methods:

  • Systematic review of observational studies on insomnia and cognitive deficits.
  • Analysis of magnetic resonance imaging studies on brain volume and white matter integrity.
  • Evaluation of interventional studies on insomnia treatment and cognitive function.

Main Results:

  • Inconsistent findings exist regarding cognitive performance and grey matter volume.
  • Emerging evidence suggests insomnia is linked to increased dementia risk and reduced white matter integrity.
  • Interventional studies show preliminary indications that insomnia treatment may benefit vigilance.

Conclusions:

  • The relationship between insomnia and cognitive decline in older adults requires further investigation.
  • Heterogeneity in study findings necessitates well-powered research to clarify these associations.
  • Targeting insomnia may offer a potential avenue for preserving cognitive health in aging populations.