Results 11 to 20 of about 1,143,306 (316)

To sleep or not to sleep: the ecology of sleep in artificial organisms [PDF]

BMC Ecology, 2008
All animals thus far studied sleep, but little is known about the ecological factors that generate differences in sleep characteristics across species, such as total sleep duration or division of sleep into multiple bouts across the 24-hour period (i.e., monophasic or polyphasic sleep activity).
ACERBI A, MCNAMARA P, NUNN C. L
openaire   +6 more sources

To sleep or not to sleep, that is the question [PDF]

Journal of Vascular Surgery, 2010
The chief of surgery finds a recently boarded vascular surgeon, Dr B.R. Ash, on the couch in the doctor's lounge where a resident is trying to awaken him for permission to start the elective schedule. Dr Ash had finished an arduous all-nighter emergency case less than an hour ago and mumbles for the resident to proceed. The chief surgeon knows that the
Jones, James W., McCullough, Laurence B.
openaire   +2 more sources

To Sleep, or Not to Sleep, That is the Question* [PDF]

Critical Care Medicine, 2013
This is a commentary on article Roche-Campo F, Thille AW, Drouot X, Galia F, Margarit L, Cordoba-Izquierdo A, Mancebo J, d'Ortho MP, Brochard L. Comparison of sleep quality with mechanical versus spontaneous ventilation during weaning of critically III tracheostomized patients. Crit Care Med. 2013;41(7):1637-44.
Najib T, Ayas, Atul, Malhotra, Sairam, Parthsarathy   +2 more
openaire   +2 more sources

To Sleep or Not to Sleep [PDF]

Seminars in Interventional Radiology, 2009
Yesterday, I reviewed an abdominal computed tomography prior to a transjugular liver biopsy. The left lobe, or whatever was located in the expected anatomic position of the left lobe, was clearly abnormal. I wasn't sure if it was a hematoma, an ischemic left lateral segment, or something else.
openaire   +2 more sources

The Natural History of Insomnia: Acute Insomnia and First-onset Depression [PDF]

, 2013
Study Objectives: While many studies have examined the association between insomnia and depression, no studies have evaluated these associations 1) within a narrow time frame, 2) with specific reference to acute & chronic insomnia, and 3) using ...
Michael L. Perlis, Ellis, Jason, Ellis, JG, Bastien, Célyne, Espie, Colin, Bastien, Célyne H., Ellis, Jason G., Gardani, M, Bastien, CH, Célyne H. Bastien, Espie, CA, Perlis, Michael L., Colin A. Espie, Perlis, Michael, Gardani, Maria, Jason G. Ellis, Perlis, ML, Espie, Colin A., Maria Gardani   +18 more
core   +1 more source

Sleep and cognition [PDF]

, 2014
Sleep is an ancestral and primitive behaviour, an important part of life thought to be essential for restoration of body and mind. As adults, we spend approximately a third of our lives asleep and as we progress through life there are certain shifts in ...
Wright, Hayley, Hough, Josie, Josie Hough, Cappuccio, F. P., Hayley Wright, Francesco P. Cappuccio, Cappuccio, Francesco, Michelle A. Miller, Hough, J., Miller, Michelle A., Miller, M. A., Wright, Hayley; id_orcid   +11 more
core   +1 more source

Boundary-Dependent Sleep-Wake Dysregulation in Idiopathic Hypersomnia. [PDF]

Ann Clin Transl Neurol
ABSTRACT Objective Idiopathic hypersomnia (IH) presents with excessive daytime sleepiness (EDS) despite apparently preserved nocturnal sleep, challenging traditional models of hypersomnolence based on sleep loss or fragmentation. We aimed to test the hypothesis that EDS in IH reflects excessive stabilization of the sleep state, consistent with ...
Mombelli S, Lacourse K, Blais H, Deshaies-Rugama AS, Thompson C, Desautels A, Montplaisir J, Nigam M, Moderie C, Khajehpiri B, Duclos C, Lina JM, Carrier J, Gosselin N.   +13 more
europepmc   +2 more sources

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

Better quality sleep promotes daytime physical activity in patients with chronic pain? : A multilevel analysis of the within-person relationship [PDF]

, 2014
Background: Promoting physical activity is key to the management of chronic pain, but little is understood about the factors facilitating an individual’s engagement in physical activity on a day-to-day basis. This study examined the within-person effect
Tang Nicole K. Y., Nicole K Y Tang, Sanborn Adam N., Nicole K. Y. Tang, Nicole K. Y. Tang (542290), Adam N. Sanborn (542291), Adam N Sanborn, Tang, Nicole K. Y., Adam N. Sanborn, Sanborn, Adam N.   +9 more
core   +2 more sources

Predictors of changes in cerebral perfusion and oxygenation during obstructive sleep apnea

Scientific Reports, 2021
Obstructive sleep apnea syndrome (OSAS) is a common sleep disorder. Severe OSAS defined as apnea–hypopnea index (AHI) ≥ 30/h is a risk factor for developing cerebro-cardiovascular diseases.
Zhongxing Zhang, Ming Qi, Gordana Hügli, Ramin Khatami   +3 more
doaj   +1 more source