Results 41 to 50 of about 40,315 (271)

Inactivity/sleep in two wild free-roaming African elephant matriarchs - Does large body size make elephants the shortest mammalian sleepers? [PDF]

, 2017
The current study provides details of sleep (or inactivity) in two wild, free-roaming African elephant matriarchs studied in their natural habitat with remote monitoring using an actiwatch subcutaneously implanted in the trunk, a standard elephant collar
Bhagwandin, Adhil, Bhagwandin, Adhil, Chase, Michael J, Gravett, Nadine, Landen, Kelly, Lyamin, Oleg I, Manger, Paul R, Siegel, Jerome M, Sutcliffe, Robert   +8 more
core   +2 more sources

Nighttime Variability in Wrist Actigraphy [PDF]

Journal of Nursing Measurement, 2011
Wrist actigraphy measures sleep activity and circadian rhythm. This study examined nighttime variability in Actiwatch parameters in a sample of breast cancer survivors (BCSs) to determine a minimum number of nights needed to obtain an accurate picture of objective sleep. A descriptive, quantitative, and repeated measures design was used.
Julie L, Otte, Judith K, Payne, Janet S, Carpenter   +2 more
openaire   +2 more sources

Combining Cardiorespiratory Signals and Video-Based Actigraphy for Classifying Preterm Infant Sleep States

Children, 2023
The classification of sleep state in preterm infants, particularly in distinguishing between active sleep (AS) and quiet sleep (QS), has been investigated using cardiorespiratory information such as electrocardiography (ECG) and respiratory signals ...
Dandan Zhang, Zheng Peng, Carola Van Pul, Sebastiaan Overeem, Wei Chen, Jeroen Dudink, Peter Andriessen, Ronald M. Aarts, Xi Long   +8 more
doaj   +1 more source

How are normal sleeping controls selected? A systematic review of cross-sectional insomnia studies, and a standardised method to select healthy controls for sleep research [PDF]

, 2008
There appears to be some inconsistency in how normal sleepers (controls) are selected and screened for participation in research studies for comparison with insomnia patients.
Louise Beattie, Colin A. Espie, Simon D. Kyle, Stephany M. Biello, Luyster, Edinger, Heffner, American Sleep Disorders Association, Buysse, Bastien, Ong, Bower, Ree, Barclay, Jones, Horne, Archer, Goel, Taillard, Phipps-Nelson, Carney, Vandewalle, Yoo, Ferguson, Buysse, Dahlgren, Carney, Buysse, Espie, Espie, Lund, Yiend, Espie, Harvey, Harvey, Kyle, Ellis, Ohayon, Barclay, Monk, Barclay, Monk, Wittmann, Roenneberg, Spiegel, Kyle, Lineberger, Wilson, Doghamji, Douglass, Baumann, Espie, Buysse, Meerlo, Kripke, Vgontzas, Kaplan, Van Dongen, Monk, Drake   +59 more
core   +5 more sources

Sleep quality influences subsequent motor skill acquisition [PDF]

, 2016
While the influence of sleep on motor memory consolidation has been extensively investigated, its relation to initial skill acquisition is less well understood.
Albouy, Genevieve, Appleman, Erica R., Cronin-Golomb, Alice, Doyon, Julien, King, Bradley R.   +4 more
core   +1 more source

Sleep Dysfunction in Fibromyalgia and Therapeutic Approach Options [PDF]

, 2020
Fibromyalgia, characterised by persistent pain, sleep disturbance, fatigue and cognitive dysfunction, is a central sensitivity syndrome that also involves abnormality in peripheral generators and in the hypothalamic pituitary adrenal axis.
Lawson, Kim
core   +1 more source

Event marker compliance in actigraphy [PDF]

Journal of Sleep Research, 2019
AbstractActigraphy is a versatile tool for evaluating sleep−wake cycles over time in the home‐environment. Patients using the Phillips Actiwatch place an event marker when going to sleep and upon awakening. We investigate compliance in pressing the Actiwatch event marker button for patients referred for insomnia, hypersomnia and disorders of circadian ...
Zibrandtsen, Ivan C., Hernandez, Camilo, Ibsen, Jette D., Kjaer, Troels W.   +3 more
openaire   +3 more sources

Intense physical activity is associated with cognitive performance in the elderly [PDF]

, 2012
Numerous studies have reported positive impacts of physical activity on cognitive function. However, the majority of these studies have utilised physical activity questionnaires or surveys, thus results may have been influenced by reporting biases ...
AIBL research group,, Ames, D, Brown, B. M, Burnham, S, Ellis, K. A, Gupta, V. B, Martins, R. N, Masters, C. L, Mondal, A, Peiffer, J. J, Rainey-Smith, S. R, Rowe, C. C, Sohrabi, H. R, Szoeke, C, Taddei, K   +14 more
core   +3 more sources

Manually scoring actigraphy in the absence of a sleep diary: Reliability analysis in Gulf War veterans

Sleep Epidemiology
Introduction: The process of manually scoring actigraphy data can be subjective with few studies utilizing and reporting clear actigraphy scoring guidelines.
Charity B. Breneman, Mary Katherine Howell, Nathaniel Allen, Elizabeth A. Klingaman, Matthew J. Reinhard   +4 more
doaj   +1 more source

Longitudinal association between sleep and Alzheimer's pathology. [PDF]

Alzheimers Dement
Abstract INTRODUCTION Since sleep disturbance is a modifiable risk factor for Alzheimer's disease (AD), we tested associations between sleep and AD pathology in cognitively unimpaired (CU) persons. METHODS We included 223 participants from the PREVENT‐AD cohort with self‐reported measures of sleep, objective actigraphy measures of sleep, and positron ...
Mohammediyan B, Baril AA, Fajardo Valdez A, St-Onge F, Pichet Binette A, Carrier J, Geddes MR, Ducharme S, Montembeault M, Soucy JP, Breitner J, Poirier J, Villeneuve S, PREVENT‐AD Research Group.   +13 more
europepmc   +2 more sources