Results 21 to 30 of about 703,277 (252)

Functional connectivity in default mode network correlates with severity of hypoxemia in obstructive sleep apnea

Brain and Behavior, 2020
Introduction Obstructive sleep apnea (OSA)‐associated hypoxemia, sleep fragmentation, and cerebral vascular dysfunction are implicated in cognitive dysfunction.
Ya‐Ting Chang, Yung‐Che Chen, Yung‐Lung Chen, Shih‐Wei Hsu, Feng‐Yueh Yang, Chen‐Chang Lee, Po‐Yuan Hsu, Meng‐Chih Lin   +7 more
doaj   +1 more source

Hypocretin/orexin influences chronic sleep disruption injury in the hippocampus

Frontiers in Aging Neuroscience, 2022
Chronic sleep disruption is a risk factor for Alzheimer’s disease (AD), yet mechanisms by which sleep disturbances might promote or exacerbate AD are not understood.
Henry Nick, Polina Fenik, Yan Zhu, Sigrid Veasey   +3 more
doaj   +1 more source

Effects of sleep fragmentation on the arousability to resistive loading in NREM and REM sleep in normal men

, 2006
STUDY OBJECTIVE: In healthy subjects, arousability to inspiratory resistive loading is greater during rapid eye movement (REM) sleep compared with non-REM (NREM) sleep but is poorest in REM sleep in patients with sleep apnea.
Corinne Roth, Matthias Gugger, Gugger, Matthias, Bassetti, Claudio L, Mathis, Johannes, Claudio L. Bassetti, Johannes Mathis, Zavodny, Jeannette, Jeannette Zavodny, Neil J. Douglas, Douglas, Neil J, Roth, Corinne   +11 more
core   +2 more sources

Lowered insulin signalling ameliorates age-related sleep fragmentation in Drosophila.

PLoS Biology, 2014
Sleep fragmentation, particularly reduced and interrupted night sleep, impairs the quality of life of older people. Strikingly similar declines in sleep quality are seen during ageing in laboratory animals, including the fruit fly Drosophila.
Athanasios Metaxakis, Luke S Tain, Sebastian Grönke, Oliver Hendrich, Yvonne Hinze, Ulrike Birras, Linda Partridge   +6 more
doaj   +1 more source

Circadian and ultradian NREM-REM sleep modulation of dream recall : effects of age and spectral activity [PDF]

, 2011
This thesis deals with the electrophysiological correlates of sleep prior to dream recall and the age-related effects on dream processing. The dual NREM/REM sleep cycle and the circadian modulation of REM sleep sum to generate dream processing.
Laxhmi Chellappa, Sarah
core   +1 more source

Short-term sleep fragmentation enhances anxiety-related behavior: The role of hormonal alterations.

PLoS ONE, 2019
INTRODUCTION:The neuroendocrine background of acute sleep fragmentation in obstructive sleep apnea and sleep fragmentation involvement in psychiatric comorbidities, common in these patients, are still largely unknown.
Zeljko Grubac, Nikola Sutulovic, Anida Ademovic, Milica Velimirovic, Aleksandra Rasic-Markovic, Djuro Macut, Natasa Petronijevic, Olivera Stanojlovic, Dragan Hrncic   +8 more
doaj   +1 more source

Decoupling of sleep-dependent cortical and hippocampal interactions in a neurodevelopmental model of schizophrenia [PDF]

, 2012
Rhythmic neural network activity patterns are defining features of sleep, but interdependencies between limbic and cortical oscillations at different frequencies and their functional roles have not been fully resolved.
Tricklebank, Mark, Tricklebank, Mark D., Bartsch, Ullrich, Jones, Matt W, Wafford, Keith, Tricklebank, Mark D, Edgar, Dale, Phillips, Keith G., McCarthy, Andrew, Wafford, Keith A., Phillips, K, Jones, Matt W., Edgar, Dale M., McCarthy, Andrew P, Edgar, DM, Wafford, KA, Phillips, Keith, McCarthy, Andrew P., Jones, ME   +18 more
core   +1 more source

Effects of Sleep Fragmentation and Induced Mood on Pain Tolerance and Pain Sensitivity in Young Healthy Adults

Frontiers in Psychology, 2018
Background: Experimental research exploring the sleep/pain-relationship has typically focused on total or partial sleep deprivation, hereby failing to reproduce the mere fragmented sleep pattern typically observed in patients with chronic pain.
Ragna Rosseland, Ståle Pallesen, Ståle Pallesen, Inger Hilde Nordhus, Inger Hilde Nordhus, Dagfinn Matre, Tone Blågestad   +6 more
doaj   +1 more source

Transdermal Rotigotine Improves Sleep Fragmentation in Parkinson’s Disease: Results of the Multicenter, Prospective SLEEP-FRAM Study

Parkinson's Disease, 2015
Sleep disturbances occur frequently in patients with Parkinson’s disease (PD). The aim of this study was to investigate the effects of rotigotine on sleep fluctuations in a sample of PD patients with self-reported complaints of nocturnal awakenings. This
Javier Pagonabarraga, Gerard Piñol, Adriana Cardozo, Pilar Sanz, Víctor Puente, Pilar Otermín, Inés Legarda, Tania Delgado, Carmen Serrano, Ernest Balaguer, María Aguirregomozcorta, Ramiro Álvarez, Jaime J. Kulisevsky   +12 more
doaj   +1 more source

Extreme sleep fragmentation for 11 consecutive days and nights does not significantly alter total sleep time, and sleep stage distribution, during the continuous alpine downhill skiing world record

Health Promotion & Physical Activity, 2021
Introduction: Extreme levels of sleep deprivation, fragmentation and management, are major problems in many sportive disciplines, ultramarathons, polar or extreme altitude expeditions, and in space operations. Material and methods: Polysomnographic (PSG)
Mirco Gindulis, Nikolaus Netzer, Martin Burtscher, Hannes Gatterer, Christian Schmidt, Audry Morrison, Thomas Küpper   +6 more
doaj   +1 more source