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https://www.readbyqxmd.com/read/28506292/normobaric-hypoxia-overnight-impairs-cognitive-reaction-time
#1
Stephan Pramsohler, Stefan Wimmer, Martin Kopp, Hannes Gatterer, Martin Faulhaber, Martin Burtscher, Nikolaus Cristoph Netzer
BACKGROUND: Impaired reaction time in patients suffering from hypoxia during sleep, caused by sleep breathing disorders, is a well-described phenomenon. High altitude sleep is known to induce periodic breathing with central apneas and oxygen desaturations, even in perfectly healthy subjects. However, deficits in reaction time in mountaineers or workers after just some nights of hypoxia exposure are not sufficiently explored. Therefore, we aimed to investigate the impact of sleep in a normobaric hypoxic environment on reaction time divided by its cognitive and motoric components...
May 15, 2017: BMC Neuroscience
https://www.readbyqxmd.com/read/28502410/performance-awareness-predicting-cognitive-performance-during-simulated-shiftwork-using-chronobiological-measures
#2
Drew M Morris, June J Pilcher, Joseph B Mulvihill, Melissa A Vander Wood
Physiological tracers of circadian rhythms and a performance awareness index were examined as predictors of cognitive performance during two sleep deprivation conditions common to occupational shiftwork. Study 1: Thirty-three sleep-deprived participants completed a simulated nightshift. Study 2: Thirty-two partially sleep-deprived participants completed a simulated dayshift. A standardized logic test was used to measure cognitive performance. Body temperature and heart rate were measured as chronobiological indices of endogenous circadian rhythms...
September 2017: Applied Ergonomics
https://www.readbyqxmd.com/read/28501473/electrical-status-epilepticus-during-sleep-in-mowat-wilson-syndrome
#3
Paolo Bonanni, Susanna Negrin, Anna Volzone, Nicoletta Zanotta, Roberta Epifanio, Claudio Zucca, Elisa Osanni, Elisa Petacchi, Franco Fabbro
AIM: Mowat-Wilson Syndrome (MWS) is a genetic rare disease. Epilepsy is present in 70-75% of Patients and an age-dependent electroclinical pattern has been described. Up to date, there are studies with overnight sleep EEGs, probably because of the severe intellectual disability (ID) and hyperactivity of these Patients. Our purpose was to verify the hypothesis that MWS Patients might have electrical status epilepticus in slow wave sleep (ESES pattern). METHODS: A retrospective analysis of anamnestic and electrographic data was performed on 7 consecutive MWS Patients followed between 2007 and 2016...
May 10, 2017: Brain & Development
https://www.readbyqxmd.com/read/28498029/is-one-day-off-sufficient-for-re-adaptation-to-a-daytime-routine-after-two-consecutive-nights-of-work
#4
Yu-San Chang, Yu-Hsuan Wu, Hsiang-Lan Chen, Chung-Yao Hsu
Fast rotation three-shift working schedules are common in the medical field in Taiwan. This study investigated whether 24 hours off is sufficient for re-adaptation to a daytime routine after working two night shifts (NSs) by comparing changes in cognitive function, anxiety state, and objectively-measured sleep propensity between those working two NSs followed by 24 hours off (n=21, 2NS-off) and an off-duty group (n=21, OD). The results showed that nurses in the 2NS-off group were less alert and had decreased visual attention performance and executive function ability than the OD group during the daytime...
May 12, 2017: Ergonomics
https://www.readbyqxmd.com/read/28495217/individuals-with-mild-ms-with-poor-sleep-quality-have-impaired-visuospatial-memory-and-lower-perceived-functional-abilities
#5
Catherine F Siengsukon, Mayis Aldughmi, Melike Kahya, Sharon Lynch, Jared Bruce, Morgan Glusman, Abigail Ness Norouzinia, Sandra Billinger
BACKGROUND: Sleep disturbances are common in individuals with Multiple Sclerosis (MS), but the impact of poor sleep quality on cognitive and physical function in individuals with MS is less clear. OBJECTIVE/HYPOTHESIS: The purpose of this study was to examine the relationship between sleep quality and cognitive and physical function in individuals with mild MS. METHODS: Forty individuals with relapsing-remitting or secondary-progressive MS (50...
April 29, 2017: Disability and Health Journal
https://www.readbyqxmd.com/read/28487671/improved-mental-acuity-forecasting-with-an-individualized-quantitative-sleep-model
#6
Brent D Winslow, Nam Nguyen, Kimberly E Venta
Sleep impairment significantly alters human brain structure and cognitive function, but available evidence suggests that adults in developed nations are sleeping less. A growing body of research has sought to use sleep to forecast cognitive performance by modeling the relationship between the two, but has generally focused on vigilance rather than other cognitive constructs affected by sleep, such as reaction time, executive function, and working memory. Previous modeling efforts have also utilized subjective, self-reported sleep durations and were restricted to laboratory environments...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28484904/is-obstructive-sleep-apnoea-related-to-neuropsychological-function-in-healthy-older-adults-a-systematic-review-and-meta-analysis
#7
REVIEW
Nathan Cross, Amit Lampit, Jonathon Pye, Ronald R Grunstein, Nathaniel Marshall, Sharon L Naismith
Previous systematic reviews and meta-analyses have identified cognitive deficits in adults with obstructive sleep apnoea (OSA). However, quantitative analysis of the association between OSA and neuropsychological performance has not been conducted specifically in older adults, for whom there is a greater risk of cognitive decline. We searched Medline, Embase and PsycINFO through August 2016 for studies describing associations between OSA and neuropsychological outcomes in people aged>50 years. Meta-analyses were performed on these studies for overall cognition and within cognitive domains...
May 8, 2017: Neuropsychology Review
https://www.readbyqxmd.com/read/28479798/impairments-in-quality-of-life-and-cognitive-functions-in-long-term-survivors-of-glioblastoma
#8
Chirag Solanki, Divya Sadana, Arivazhagan Arimappamagan, K V L N Rao, Jamuna Rajeswaran, D K Subbakrishna, Vani Santosh, Paritosh Pandey
BACKGROUND: The incidence of long-term survival in glioblastoma (GBM), i.e., >3 years, ranges from 3% to 5%. Although extensive research is performed in novel therapies for prolonging survival, there is a scarcity of research focusing on the impact of tumor and treatment on cognitive, psychological, and social status of survivors. This study is an attempt to look into this poorly addressed important issue. MATERIALS AND METHODS: Nine patients (six adults and three children) with GBM who had survived >3 years were included in the study...
April 2017: Journal of Neurosciences in Rural Practice
https://www.readbyqxmd.com/read/28479217/physiological-and-psychological-effects-of-testosterone-during-severe-energy-deficit-and-recovery-a-study-protocol-for-a-randomized-placebo-controlled-trial-for-optimizing-performance-for-soldiers-ops
#9
Stefan M Pasiakos, Claire E Berryman, J Philip Karl, Harris R Lieberman, Jeb S Orr, Lee M Margolis, John A Caldwell, Andrew J Young, Monty A Montano, William J Evans, Oshin Vartanian, Owen T Carmichael, Kishore M Gadde, Melissa Harris, Jennifer C Rood
BACKGROUND: The physiological consequences of severe energy deficit include hypogonadism and the loss of fat-free mass. Prolonged energy deficit also impacts physical performance, mood, attentiveness, and decision-making capabilities. This study will determine whether maintaining a eugonadal state during severe, sustained energy deficit attenuates physiological decrements and maintains mental performance. This study will also assess the effects of normalizing testosterone levels during severe energy deficit and recovery on gut health and appetite regulation...
May 4, 2017: Contemporary Clinical Trials
https://www.readbyqxmd.com/read/28475689/intermediate-but-not-extended-afternoon-naps-may-preserve-cognition-in-chinese-older-adults
#10
Junxin Li, Yu-Ping Chang, Barbara Riegel, Brendan T Keenan, Miranda Varrasse, Allan I Pack, Nalaka S Gooneratne
Background: The association between daytime napping and cognition is not well-studied in older adults. This study aimed to examine the associations between self-reported afternoon nap duration and change in cognition after 2-year follow-up in Chinese older adults. Methods: A total of 3,037 individuals aged 60 years and older from the China Health and Retirement Longitudinal Study baseline and 2-year follow-up were included. Overall cognition was assessed by three interview-based sub-measures of orientation to time and attention, episodic memory, and visuospatial abilities...
May 5, 2017: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/28472528/internet-and-in-person-cognitive-behavioral-therapy-for-insomnia-in-military-personnel-a-randomized-clinical-trial
#11
Daniel J Taylor, Alan L Peterson, Kristi E Pruiksma, Stacey Young-McCaughan, Karin Nicholson, Jim Mintz
STUDY OBJECTIVES: Compare in-person and unguided Internet-delivered cognitive behavioral therapy for insomnia (CBTi) with a minimal contact control condition in military personnel. METHODS: A 3-arm parallel randomized clinical trial of 100 active duty US Army personnel at Fort Hood, Texas. Internet and in-person CBTi were comparable, except for the delivery format. The control condition consisted of phone call assessments. RESULTS: Internet and in-person CBTi both performed significantly better than the control condition on diary-assessed sleep efficiency (d = 0...
May 4, 2017: Sleep
https://www.readbyqxmd.com/read/28472447/actigraphic-sleep-duration-and-fragmentation-in-older-women-associations-with-performance-across-cognitive-domains
#12
Adam P Spira, Katie L Stone, Susan Redline, Kristine E Ensrud, Sonia Ancoli-Israel, Jane A Cauley, Kristine Yaffe
Study Objectives: To determine the association of actigraphic sleep duration and fragmentation with cognition in community-dwelling older women. Methods: We studied 782 women (mean age = 87.4) of varied cognitive status from the Study of Osteoporotic Fractures who completed wrist actigraphy and the 3MS, California Verbal Learning Test-II-Short Form, digit span, verbal fluency tests, and the Trailmaking Test, Part B (Trails B). Total sleep time (TST) and wake after sleep onset (WASO) tertiles were our primary predictors...
May 2, 2017: Sleep
https://www.readbyqxmd.com/read/28472425/prodromal-parkinsonism-and-neurodegenerative-risk-stratification-in-rem-sleep-behaviour-disorder
#13
Thomas R Barber, Michael Lawton, Michal Rolinski, Samuel Evetts, Fahd Baig, Claudio Ruffmann, Aimie Gornall, Johannes C Klein, Christine Lo, Gary Dennis, Oliver Bandmann, Timothy Quinnell, Zenobia Zaiwalla, Yoav Ben-Shlomo, Michele Tm Hu
Objectives.: REM sleep behaviour disorder (RBD) is the most specific marker of prodromal alpha-synucleinopathies. We sought to delineate the baseline clinical characteristics of RBD and evaluate risk stratification models. Methods.: Clinical assessments were performed in 171 RBD, 296 control and 119 untreated Parkinson's (PD) subjects. Putative risk measures were assessed as predictors of prodromal neurodegeneration and Movement Disorders Society (MDS) criteria for prodromal PD were applied...
May 4, 2017: Sleep
https://www.readbyqxmd.com/read/28470121/shift-work-and-cognitive-flexibility-decomposing-task-performance
#14
Philip Cheng, Gabriel Tallent, Thomas John Bender, Kieulinh Michelle Tran, Christopher L Drake
Deficits in cognitive functioning associated with shift work are particularly relevant to occupational performance; however, few studies have examined how cognitive functioning is associated with specific components of shift work. This observational study examined how circadian phase, nocturnal sleepiness, and daytime insomnia in a sample of shift workers ( N = 30) were associated with cognitive flexibility during the night shift. Cognitive flexibility was measured using a computerized task-switching paradigm, which produces 2 indexes of flexibility: switch cost and set inhibition...
April 2017: Journal of Biological Rhythms
https://www.readbyqxmd.com/read/28469566/identifying-the-best-times-for-cognitive-functioning-using-new-methods-matching-university-times-to-undergraduate-chronotypes
#15
M D R Evans, Paul Kelley, Jonathan Kelley
University days generally start at fixed times in the morning, often early morning, without regard to optimal functioning times for students with different chronotypes. Research has shown that later starting times are crucial to high school students' sleep, health, and performance. Shifting the focus to university, this study used two new approaches to determine ranges of start times that optimize cognitive functioning for undergraduates. The first is a survey-based, empirical model (SM), and the second a neuroscience-based, theoretical model (NM)...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28467286/uncovering-common-sleep-disorders-and-their-impacts-on-occupational-performance
#16
Sylvia R Judd
Sleep is an active process; the body undergoes restoration and regeneration. Adequate sleep is essential to health and cognitive function. Sleep is critical for cell repair, a healthy immune system, and hormonal regulation, and aids in the process of learning, memory, and emotion. Inadequate sleep can lead to multiple chronic health and mental conditions over time. The occupational health nurse can be instrumental in screening for two of the most common sleep disorders, insomnia and obstructive sleep apnea, by asking workers key questions and using simple screening tools...
May 2017: Workplace Health & Safety
https://www.readbyqxmd.com/read/28462547/changing-adolescent-sleep-patterns-factors-affecting-them-and-the-related-problems
#17
Harpreet Kaur, Harpreet Singh Bhoday
Sleep affects physical growth, behavior and emotional development besides determining cognitive functioning, learning and attention especially of a growing child. Adolescence represents one of the critical transitions in the life span and is characterized by a tremendous pace in growth and change that is second only to that of infancy. Adolescent sleep patterns deserve particular attention because of the potential impact on school performance. Average sleep period in adolescents is reduced during school days to around seven hours...
March 2017: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/28459953/early-clinical-predictors-of-5-year-outcome-after-concussive-blast-traumatic-brain-injury
#18
Christine L Mac Donald, Jason Barber, Mary Jordan, Ann M Johnson, Sureyya Dikmen, Jesse R Fann, Nancy Temkin
Importance: The long-term clinical effects of wartime traumatic brain injuries (TBIs), most of which are mild, remain incompletely described. Current medical disability cost estimates from world conflicts continually surpass projections. Additional information regarding long-term functional trajectory is needed to reduce this extensive public health burden. Objectives: To examine 5-year clinical outcomes leveraging existing clinical data collected at 1 year after injury in the same patients and to identify early risk factors for long-term disability...
May 1, 2017: JAMA Neurology
https://www.readbyqxmd.com/read/28455547/associations-of-sleep-disturbance-with-physical-function-and-cognition-in-older-adults-with-cancer
#19
Kah Poh Loh, Chintan Pandya, Jason Zittel, Sindhuja Kadambi, Marie Flannery, Natalie Reizine, Allison Magnuson, Giovanna Braganza, Karen Mustian, William Dale, Paul Duberstein, Supriya Gupta Mohile
PURPOSE: Although sleep disturbances are common in older adults, studies evaluating the prevalence of sleep disturbance and its influence on functional outcomes in older adults with cancer are few. In this study, we examined the prevalence of sleep disturbance and its association with physical function and cognition in older adults with cancer. METHODS: This is a cross-sectional study of patients who were referred and evaluated in the Specialized Oncology Care & Research in the Elderly (SOCARE) clinics at the Universities of Rochester and Chicago from May 2011 to October 2015...
April 28, 2017: Supportive Care in Cancer: Official Journal of the Multinational Association of Supportive Care in Cancer
https://www.readbyqxmd.com/read/28455107/sleep-quality-and-duration-in-relation-to-memory-in-the-elderly-initial-results-from-the-hellenic-longitudinal-investigation-of-aging-and-diet
#20
A Tsapanou, Y Gu, D M O'Shea, M Yannakoulia, M Kosmidis, E Dardiotis, G Hadjigeorgiou, P Sakka, Y Stern, N Scarmeas
BACKGROUND: Sleep is crucial for cognition, particularly for memory, given its complex association with neurodegenerative processes. The aim of the present study was to examine the association between sleep quality as well as sleep duration and memory performance in a Greek elderly population. SETTING: Cross-sectional design in the Hellenic Longitudinal Investigation of Aging and Diet (HELIAD), a population representative study of Greek elderly (65years or older)...
April 26, 2017: Neurobiology of Learning and Memory
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