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actigraphy
Also known as: actigraphy device, actigraphy studies, actigraph
Facts (21)
Sources
Investigating the impact of sleep quality on cognitive functions ... frontiersin.org 13 facts
claimThere can be inconsistencies between self-reported sleep quality and objectively measured sleep quality gathered via actigraphy.
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.
claimActigraphy devices provide an objective evaluation of sleep patterns by tracking movement during both sleep and wakeful periods.
procedureParticipants in the study were directed to wear actigraph devices on their wrists throughout waking hours for one week, removing the devices only for water-related activities or overnight charging.
measurementActigraphy data showed that university students in Tokyo had lower sleep efficiency (82.5 ± 7.0%) compared to university students in London (87.5 ± 8.0%) with a p-value < 0.001 and Cohen's d = 0.67.
claimRegression analyses indicate that Pittsburgh Sleep Quality Index (PSQI) scores significantly predict performance on cognitive measures (RAVLT, Stroop Test, RPM, and WCST) even after controlling for demographic variables (age, gender, socioeconomic status) and actigraphy-measured sleep duration and efficiency.
procedureActigraphy devices were used by study participants for one week to provide an objective evaluation of sleep patterns by tracking movement during sleep and wakeful periods.
procedureThe study utilized an integrated methodology by combining subjective sleep quality data from the Pittsburgh Sleep Quality Index (PSQI) with objective sleep data obtained through actigraphy.
claimThere is a need for sleep research methodologies that integrate both subjective evaluations and objective measures, such as actigraphy or polysomnography.
claimActigraphy is limited in sleep research because it quantifies movement but fails to encompass the full spectrum of sleep architecture or disturbances that could influence cognitive performance.
measurementActigraphy data showed that university students in Tokyo had shorter sleep duration (6.1 ± 1.1 hours) compared to university students in London (6.9 ± 1.3 hours) with a p-value < 0.001 and Cohen's d = 0.63.
referenceAncoli-Israel S., Cole R., Alessi C., Chambers M., Moorcroft W., and Pollak C. P. published 'The role of actigraphy in the study of sleep and circadian rhythms' in the journal Sleep in 2003.
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.
Sleep Across the Lifespan: A Neurobehavioral Perspective link.springer.com Feb 5, 2025 2 facts
measurementIn a study using actigraphy and sleep diaries, the three-day standard deviation mean for college students’ sleep duration was equivalent to just over 90 minutes.
referenceParsons L, Howes A, Jones CA, and Surtees ADR published a meta-analytic review titled 'Changes in parental sleep from pregnancy to postpartum: a meta-analytic review of actigraphy studies' in Sleep Medicine Reviews in 2023.
Sleep Deprivation, Sleep Disorders, and Chronic Disease - CDC cdc.gov Aug 31, 2023 1 fact
claimThe National Health and Nutrition Examination Survey (NHANES) data includes actigraphy data that can be used to examine variations in sleep onset and duration across weekdays and weekends to measure sleep regularity or rhythm.
Sleep Deprivation: What It Is, Symptoms, Treatment & Stages my.clevelandclinic.org Aug 11, 2022 1 fact
procedureActigraphy involves wearing a watch-like device to track sleep patterns, which is used to diagnose circadian rhythm disorders by identifying atypical sleep cycles.
Sleep Deprivation: Symptoms, Causes, Effects, and Treatment sleepfoundation.org Sep 10, 2025 1 fact
claimPatients being evaluated for sleep deprivation may be asked to keep a sleep diary or wear an actigraphy device, which is a watch-like tool that tracks movement to provide insight into sleep patterns.
Associations Between Sleep Duration and Cognitive Function ... humanfactors.jmir.org 1 fact
claimThe study suggests that incorporating objective sleep measures, such as actigraphy or polysomnography, could yield more precise assessments in future research.
U shaped association between sleep duration and long ... nature.com by F Feng · 2025 1 fact
perspectiveFuture research should incorporate objective sleep measurements such as polysomnography and actigraphy, and conduct randomized controlled trials to determine if sleep duration interventions targeting the optimal range of 7.23 hours can reduce dementia risk.
Extent and Health Consequences of Chronic Sleep Loss and ... - NCBI ncbi.nlm.nih.gov 1 fact
procedureSleep logs or actigraphy, which uses movement patterns to estimate sleep and wake times, can be used to exclude chronic sleep deprivation as a diagnosis before performing the Multiple Sleep Latency Test.