Knowledge Tree
cognitive performance
Also known as: cognitive task performance
Facts (76)
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Investigating the impact of sleep quality on cognitive functions ... frontiersin.org 30 facts
claimPoor sleep quality impairs attention, memory, executive functions, and overall cognitive performance, as documented by Leong and Chee (2023).
claimThe study's conceptual framework examines the connection between sleep quality and cognitive functions in university students from Tokyo, Japan, and London, UK, by combining theoretical viewpoints and empirical evidence to demonstrate the impact of sleep quality on cognitive performance and the role of cultural contexts.
claimThe study demonstrates that differences in sleep quality between university students in Tokyo and London translate into differences in cognitive performance.
claimThe study investigated variations in sleep quality and cognitive performance stemming from distinct cultural contexts and academic pressures in Tokyo and London.
claimThere is an inverse relationship between sleep quality and cognitive performance in both Tokyo and London, where poorer sleep quality (indicated by higher PSQI scores) is associated with lower performance on cognitive tests.
claimPoor sleep quality impairs attention, memory, executive functions, and overall cognitive performance, as documented by Leong and Chee (2023).
procedureThe data collection process for the study on sleep quality and cognitive performance utilized a combination of self-reported questionnaires and standardized cognitive assessments.
claimA proposed study aims to investigate the relationship between circadian alignment, sleep quality, and cognitive performance among students in Tokyo and London, considering cultural and environmental factors.
procedureThe study used the Pittsburgh Sleep Quality Index (PSQI), actigraphy, and a battery of cognitive assessments including the Rey Auditory Verbal Learning Test (RAVLT), Stroop Test, Raven's Progressive Matrices (RPM), and Wisconsin Card Sorting Test (WCST) to measure sleep and cognitive performance.
measurementCorrelations between sleep quality and cognitive performance in Tokyo are statistically significant at p < 0.001.
claimThe magnitude of negative correlations between sleep quality and cognitive performance is consistently larger in Tokyo than in London for all cognitive measures.
referenceRichards et al. (2020) established a negative association between sleep quality and cognitive performance.
claimThe negative impact of poor sleep quality on verbal learning and memory is more pronounced among university students in Tokyo compared to those in London, indicating that cultural context moderates the relationship between sleep quality and cognitive performance.
referenceHicks, Meyer, and Watts (2023) examined the differential effects of chronotype on physical activity and cognitive performance in older adults, published in Frontiers in Epidemiology.
claimLifestyle factors including social jetlag, exposure to electronic devices before bed, and irregular work schedules can disrupt sleep patterns and impair cognitive performance.
claimThe study demonstrates that the strength of the relationship between sleep quality and cognitive performance varies across cultural contexts.
claimThe study investigates the relationship between specific dimensions of sleep quality (duration, consistency, and disturbances) and cognitive performance (memory retention, attention span, problem-solving abilities, and executive functioning) among university students in Tokyo and London.
claimThe cross-sectional design of the study on sleep quality and cognitive functions restricts the ability to draw causal conclusions regarding the relationship between sleep quality and cognitive performance.
claimSignificant negative correlations exist between Pittsburgh Sleep Quality Index (PSQI) scores and cognitive performance, indicating that poorer sleep quality correlates with diminished cognitive abilities across domains.
claimHeller et al. (2024) assert that disruptions in circadian rhythms, often caused by irregular sleep patterns or environmental influences, lead to a misalignment between optimal cognitive performance periods and academic demands.
referenceCircadian Rhythm Theory posits that biological clocks are important for regulating sleep-wake cycles and influencing cognitive performance.
claimThe study aims to evaluate how academic stress, lifestyle choices (including exercise, social interactions, dietary patterns, and technology use before bed), and cultural factors (including societal expectations, educational systems, and parental influences) mediate or moderate the association between sleep quality and cognitive performance in university students in Tokyo and London.
claimThe negative relationship between sleep quality and cognitive performance is more pronounced in Tokyo students compared to other groups, likely reflecting higher levels of academic stress and societal pressure.
procedureResearchers utilized multivariate regression analyses, such as SPSS or R, to investigate the connection between sleep quality, assessed through Pittsburgh Sleep Quality Index (PSQI) scores, and cognitive performance while controlling for variables including age, gender, academic discipline, stress levels, and physical activity.
claimThe study of 400 university students in Tokyo and London found significant negative correlations between Pittsburgh Sleep Quality Index (PSQI) scores and cognitive performance, indicating that poorer sleep quality correlates with diminished cognitive abilities across domains.
claimActigraphy quantifies movement to gather objective data on sleep patterns but fails to encompass the full spectrum of sleep architecture or disturbances that could influence cognitive performance.
perspectiveFuture research on sleep quality and cognitive performance should utilize longitudinal designs to monitor variations over time, which would help elucidate causal relationships and identify mediating factors like stress or lifestyle choices.
claimThe study found a negative association between sleep quality and cognitive performance, which aligns with research by Richards et al. (2020).
referenceThe study investigating the impact of sleep quality on cognitive functions utilized a cross-sectional design to examine correlations between sleep quality and cognitive performance while accounting for demographic variables, lifestyle choices, and academic stressors across different cultural contexts.
claimResearchers used the Pittsburgh Sleep Quality Index (PSQI) to assess sleep quality in relation to cognitive performance.
Impact of sleep duration on executive function and brain structure nature.com Mar 3, 2022 16 facts
claimThe study demonstrates that sleep duration is a modifiable lifestyle factor related to cognitive performance, which has implications for maintaining healthy cognitive aging in middle-to-late life individuals.
claimSeven hours of sleep per day is associated with the highest cognitive performance in middle-to-late life individuals, with performance decreasing for every hour of sleep below or above this duration.
claimThe negative cognitive effects of very short (two to three hours) and very long (11 to 12 hours) sleep durations are more apparent in younger participants (38–59 years) than in older participants (60–73 years).
claimPoor sleep quality is associated with impaired cognitive performance in older adults, as reported in a 2013 study in the Journal of Sleep Research.
claimIn the UK Biobank cohort, peak cognitive performance in middle-to-late healthy individuals is associated with seven hours of overnight sleep.
claimSleep duration and cognitive performance show cross-sectional associations in the UK Biobank population, according to a 2017 study in Sleep Medicine.
claimMiyata et al. found that poor sleep quality impairs cognitive performance in older adults.
claimThe study on sleep duration and brain structure found that sleep duration is a modifiable lifestyle factor related to cognitive performance, with implications for maintaining healthy cognitive aging in middle-to-late life individuals.
claimThe six-to-eight hour sleep duration band used in the regression model was selected because seven hours of sleep is associated with the highest cognitive performance, and the one-hour buffer on either side accounts for self-reporting bias.
claimKyle et al. identified cross-sectional associations between sleep and cognitive performance in the UK Biobank.
referenceLo, J. C., Loh, K. K., Zheng, H., Sim, S. K. Y., and Chee, M. W. L. found that sleep duration is associated with age-related changes in brain structure and cognitive performance in a 2014 study published in the journal Sleep.
measurementThe quadratic relationship between seven hours of sleep and optimal cognitive performance persists in individuals older than 60 years, based on an analysis of 212,006 individuals.
claimA multiple regression model using Executive Function as the dependent variable confirmed a quadratic relationship between sleep duration and cognitive performance, controlling for age, chronotype, insomnia, obstructive sleep apnoea traits, vascular co-morbidity, smoking, BMI, APOE ε4 genotype, and socioeconomic status.
referenceThe study examined the relationship between sleep duration and cognitive performance in 479,420 healthy individuals aged 38 to 73, using data from the UK Biobank.
claimSleep duration exhibits a quadratic relationship with cognitive performance, where performance worsens as sleep duration decreases from six to three hours or increases from eight to 12 hours.
referencePrevious studies using UK Biobank cognitive tests associated sleeping 10 hours or more (long sleep) and six hours or less (short sleep) with worse cognitive performance.
The Profound Interplay Between Sleep and Cognitive Function creyos.com Aug 14, 2025 4 facts
claimPromoting healthy sleep habits is essential to maintaining and improving cognitive performance and overall brain health.
referenceSleep spindles, which are short neural oscillations that occur during NREM sleep, have been consistently linked to cognitive performance (Bódizs et al., 2014).
claimSleep is a dynamic and essential process that impacts cognitive performance and overall brain health.
claimSleep plays an invaluable role in maintaining optimal cognitive performance and preserving brain health, including supporting reasoning abilities, memory consolidation, and protection against cognitive decline and Alzheimer's disease.
Sleep Across the Lifespan: A Neurobehavioral Perspective link.springer.com Feb 5, 2025 3 facts
referenceBestmann A, Conzelmann A, Baving L, and Prehn-Kristensen A published 'Associations between cognitive performance and sigma power during sleep in children with attention-deficit/hyperactivity disorder, healthy children, and healthy adults' in PLoS ONE in 2019.
claimSigma power and Slow Wave Activity (SWA) are interpreted as indicators of brain maturation, where sleep EEG signatures of greater maturity relate to better cognitive performance across domains.
referenceReynolds CM, Short MA, and Gradisar M published 'Sleep spindles and cognitive performance across adolescence: a meta-analytic review' in the Journal of Adolescence in 2018.
U shaped association between sleep duration and long ... nature.com by F Feng · 2025 2 facts
procedureThe CHARLS study evaluates cognitive performance across four domains: orientation, attention, episodic memory, and visuospatial abilities.
claimResearchers predict that normal sleep duration confers optimal long-term cognitive performance, while both insufficient sleep and prolonged sleep duration increase the risk of long-term cognitive decline in middle-aged and older adults.
Extent and Health Consequences of Chronic Sleep Loss and ... - NCBI ncbi.nlm.nih.gov 2 facts
claimSymptoms of pain-related sleep issues include daytime fatigue, sleepiness, poor sleep quality, delayed sleep onset, and decreased cognitive and motor performance.
claimPain causes sleep fragmentation and changes in an individual's sleep architecture, with symptoms including daytime fatigue, sleepiness, poor sleep quality, delayed sleep onset, and decreased cognitive and motor performance.
Why Sleep Matters: Consequences of Sleep Deficiency sleep.hms.harvard.edu 2 facts
How Lack of Sleep Impacts Cognitive Performance and Focus sleepfoundation.org Jul 29, 2025 2 facts
Associations Between Sleep Duration and Cognitive Function ... humanfactors.jmir.org 2 facts
claimWang et al. (2022) found that poor sleep quality is negatively associated with low cognitive performance in the general population, independent of self-reported sleep-disordered breathing.
referenceLo et al. (2016) performed a systematic review and meta-analysis on the relationship between self-reported sleep duration and cognitive performance in older adults.
Virtue Epistemology - Stanford Encyclopedia of Philosophy plato.stanford.edu Jul 9, 1999 1 fact
claimVirtue ethics explains an action’s moral properties in terms of the agent’s properties, whereas virtue epistemology explains a cognitive performance’s normative properties in terms of the cognizer’s properties, such as whether a belief results from hastiness or excellent eyesight.
The Problem of Hard and Easy Problems cambridge.org Mar 31, 2023 1 fact
perspectiveDavid Chalmers argues that because nonconscious processing allows for task performance, consciousness is not necessary for cognitive and behavioral performance, and therefore consciousness cannot be defined as a problem of function performance.
Improvement in sleep duration was associated with higher cognitive ... aging-us.com Oct 20, 2020 1 fact
referenceGildner et al. (2019) conducted a longitudinal study published in Archives of Gerontology and Geriatrics examining the association between changes in sleep duration and cognitive performance among older Mexican adults.
The Health Effects of Poor Sleep | News yalemedicine.org Mar 13, 2023 1 fact
claimSleep is linked to nearly every bodily function, including the body's ability to fight infection and cognitive performance.
Long-Term Effects of Chronic Sleep Deprivation empowersleep.com Mar 15, 2023 1 fact
referenceCajochen et al. (2011) published a study in the Journal of Applied Physiology demonstrating that evening exposure to light-emitting diodes (LED)-backlit computer screens affects circadian physiology and cognitive performance.
Neuroscience of sleep - Wikipedia en.wikipedia.org 1 fact
claimShort-term consequences of sleep disruption in healthy individuals include increased stress responsivity and psychosocial issues, such as impaired cognitive or academic performance and depression.
A Synergistic Workspace for Human Consciousness Revealed by ... elifesciences.org 1 fact
referenceThe study 'The Dynamics of Functional Brain Networks: Integrated Network States during Cognitive Task Performance' was published in the journal Neuron (volume 92, pages 544–554) in 2016.
Psychedelics, Sociality, and Human Evolution frontiersin.org 1 fact
claimResearchers have proposed that instrumentalization goals for drug use include improved social interaction, improved cognitive performance, counteracting fatigue, facilitated recovery, coping with psychological stress, and the facilitation of spiritual and religious activities.
Sleep duration, chronotype, health and lifestyle factors ... bmjpublichealth.bmj.com 1 fact
claimDisruption in circadian rhythms, such as those caused by shift work or jet lag, negatively impacts cognitive performance.
Virtue Epistemology, Anyone? - The Philosophers' Magazine - philosophersmag.com 1 fact
quoteVirtue epistemology explains a cognitive performance’s normative properties in terms of the cognizer’s properties, such as whether a belief results from hastiness or excellent eyesight, or whether an inquiry manifests carelessness or discrimination.
Psychedelics and Consciousness: Distinctions, Demarcations, and ... ouci.dntb.gov.ua 1 fact
referenceWhite et al. published 'The mouse claustrum is required for optimal behavioral performance under high cognitive demand' in Biological Psychiatry, which examines the role of the claustrum in cognitive performance.
Investigation Utilization of Medicinal Plants: From Historical ... sciltp.com 1 fact
claimReay et al. (2005) studied the effects of Panax ginseng on cognitive performance.
Effects of psychedelics on neurogenesis and broader neuroplasticity link.springer.com Dec 19, 2024 1 fact
claimSuliman NA, Taib CNM, Moklas MAM, and Basir R reported in 2018 that delta-9-tetrahydrocannabinol (THC) induces neurogenesis and improves cognitive performance in male Sprague Dawley rats.