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https://www.readbyqxmd.com/read/28934530/intraindividual-increase-of-homeostatic-sleep-pressure-across-acute-and-chronic-sleep-loss-a-high-density-eeg-study
#1
Angelina Maric, Caroline Lustenberger, Esther Werth, Christian R Baumann, Rositsa Poryazova, Reto Huber
Study Objectives: To compare intraindividually the effects of acute sleep deprivation (ASD) and chronic sleep restriction (CSR) on the homeostatic increase in slow wave activity (SWA) and to relate it to impairments in basic cognitive functioning, that is, vigilance. Methods: The increase in SWA after ASD (40 hours of wakefulness) and after CSR (seven nights with time in bed restricted to 5 hours per night) relative to baseline sleep was assessed in nine healthy, male participants (age = 18-26 years) by high-density electroencephalography...
September 1, 2017: Sleep
https://www.readbyqxmd.com/read/28933896/the-effects-of-sleep-deprivation-on-item-and-associative-recognition-memory
#2
Roger Ratcliff, Hans P A Van Dongen
Sleep deprivation adversely affects the ability to perform cognitive tasks, but theories range from predicting an overall decline in cognitive functioning because of reduced stability in attentional networks to specific deficits in various cognitive domains or processes. We measured the effects of sleep deprivation on two memory tasks, item recognition ("was this word in the list studied") and associative recognition ("were these two words studied in the same pair"). These tasks test memory for information encoded a few minutes earlier and so do not address effects of sleep deprivation on working memory or consolidation after sleep...
September 21, 2017: Journal of Experimental Psychology. Learning, Memory, and Cognition
https://www.readbyqxmd.com/read/28932777/dataset-on-the-associations-between-sleep-quality-duration-and-cognitive-performance-in-cognitively-healthy-older-adults
#3
A Tsapanou, Y Gu, D M O'Shea, M Yannakoulia, M H Kosmidis, E Dardiotis, G Hadjigeorgiou, P Sakka, Y Stern, N Scarmeas
In the present data, we provide the details of the cross-sectional study examining the associations between sleep quality/sleep duration and cognitive performance. Data are from the Hellenic Longitudinal Investigation of Aging and Diet (HELIAD). A total of 1484 older adults (65 y.o. or older) took part in the study. Sleep measurements were drawn from the sleep scale of the Medical Outcomes Study (MOS). Cognition was used as a z-score drawn by different tests. The domains examined were: executive function, visuo-spatial ability, language, attention- speed of processing, as well as the composite z-score of all the cognitive domains (including memory)...
October 2017: Data in Brief
https://www.readbyqxmd.com/read/28928479/decline-of-long-range-temporal-correlations-in-the-human-brain-during-sustained-wakefulness
#4
Christian Meisel, Kimberlyn Bailey, Peter Achermann, Dietmar Plenz
Sleep is crucial for daytime functioning, cognitive performance and general well-being. These aspects of daily life are known to be impaired after extended wake, yet, the underlying neuronal correlates have been difficult to identify. Accumulating evidence suggests that normal functioning of the brain is characterized by long-range temporal correlations (LRTCs) in cortex, which are supportive for decision-making and working memory tasks. Here we assess LRTCs in resting state human EEG data during a 40-hour sleep deprivation experiment by evaluating the decay in autocorrelation and the scaling exponent of the detrended fluctuation analysis from EEG amplitude fluctuations...
September 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28918315/does-cognitive-behavioural-therapy-for-insomnia-improve-cognitive-performance-a-systematic-review-and-narrative-synthesis
#5
REVIEW
Vanessa Herbert, Simon D Kyle, Daniel Pratt
Individuals with insomnia report difficulties pertaining to their cognitive functioning. Cognitive behavioural therapy for insomnia (CBT-I) is associated with robust, long-term improvements in sleep parameters, however less is known about the impact of CBT-I on the daytime correlates of the disorder. A systematic review and narrative synthesis was conducted in order to summarise and evaluate the evidence regarding the impact of CBT-I on cognitive functioning. Reference databases were searched and studies were included if they assessed cognitive performance as an outcome of CBT-I, using either self-report questionnaires or cognitive tests...
July 12, 2017: Sleep Medicine Reviews
https://www.readbyqxmd.com/read/28910196/effect-of-alpinia-galanga-on-mental-alertness-and-sustained-attention-with-or-without-caffeine-a-randomized-placebo-controlled-study
#6
Shalini Srivastava, Mark Mennemeier, Surekha Pimple
OBJECTIVE: Although Alpinia galanga has been reported to improve cognitive performance in animals, it has not been thoroughly studied for its potential psychostimulant effect in humans. A randomized, double-dummy, double-blind, placebo-controlled cross-over study was conducted to determine the effect of A galanga on mental alertness and sustained attention in comparison with caffeine and placebo in participants with a habitual caffeine intake. METHODS: Fifty-nine participants (18-40 years and body mass index of ≥18...
September 14, 2017: Journal of the American College of Nutrition
https://www.readbyqxmd.com/read/28905326/circadian-rhythms-sleep-and-cognitive-skills-evidence-from-an-unsleeping-giant
#7
Osea Giuntella, Wei Han, Fabrizio Mazzonna
This study analyzes the effects of sleep duration on cognitive skills and depression symptoms of older workers in urban China. Cognitive skills and mental health have been associated with sleep duration and are known to be strongly related to economic behavior and performance. However, causal evidence is lacking, and little is known about sleep deprivation in developing countries. We exploit the relationship between circadian rhythms and bedtime to identify the effects of sleep using sunset time as an instrument...
September 13, 2017: Demography
https://www.readbyqxmd.com/read/28905231/sleep-disordered-breathing-and-the-risk-of-cognitive-decline-a-meta-analysis-of-19-940-participants
#8
REVIEW
Xiaoxia Zhu, Yanli Zhao
Sleep-disordered breathing (SDB) is related to the incidence of cognitive decline. However, results of cohort studies were inconsistent. We performed a meta-analysis of cohort studies to evaluate the sequential association between SDB and cognitive decline. Cohort studies were identified by the searching of PubMed and Embase databases. A random effect model was applied to combine the results. Nineteen thousand nine hundred forty participants from six cohort studies were included. Participants with SDB at baseline had significantly higher risk of cognitive decline, as indicated by a combined outcome of mild cognitive impairment (MCI) or dementia (RR = 1...
September 13, 2017: Sleep & Breathing, Schlaf & Atmung
https://www.readbyqxmd.com/read/28900837/perseverative-cognition-as-an-explanatory-mechanism-in-the-relation-between-job-demands-and-sleep-quality
#9
Michelle Van Laethem, Debby G J Beckers, Sabine A E Geurts, Johanna Garefelt, Linda L Magnusson Hanson, Constanze Leineweber
PURPOSE: The aim of this longitudinal three-wave study was to examine (i) reciprocal associations among job demands, work-related perseverative cognition (PC), and sleep quality; (ii) PC as a mediator in-between job demands and sleep quality; and (iii) continuous high job demands in relation to sleep quality and work-related PC over time. METHOD: A representative sample of the Swedish working population was approached in 2010, 2012, and 2014, and 2316 respondents were included in this longitudinal full-panel survey study...
September 12, 2017: International Journal of Behavioral Medicine
https://www.readbyqxmd.com/read/28900721/effects-of-per3-clock-gene-polymorphisms-on-aging-related-changes-of-the-cerebral-cortex
#10
Delphine Dewandre, Mercedes Atienza, Mayely P Sanchez-Espinosa, Jose L Cantero
Considerable evidence suggests that circadian rhythmicity is progressively disrupted in senescence. Among clock genes, Period3 (PER3) has been associated with circadian phenotypes, homeostatic regulation of sleep, and cognitive performance in young adults. However, the effects of PER3 genotype on aging-related changes in both cognitive function and cortical integrity remain largely unknown. To shed light into this issue, we have investigated differences in cognitive performance, patterns of cortical thickness, and cortical glucose consumption in normal elderly subjects homozygous carriers of the short (PER3(4/4), n = 32) and long repeat alleles (PER3(5/5), n = 32)...
September 12, 2017: Brain Structure & Function
https://www.readbyqxmd.com/read/28893747/the-health-and-well-being-of-australia-s-future-medical-doctors-protocol-for-a-5-year-observational-cohort-study-of-medical-trainees
#11
Erin Cvejic, Gordon Parker, Samuel B Harvey, Zachery Steel, Dusan Hadzi-Pavlovic, Claire L Macnamara, Uté Vollmer-Conna
INTRODUCTION: Clinical training in the undergraduate medical course places multiple stressors on trainees, which have been held to lead to heightened distress, depression, suicide, substance misuse/abuse and poor mental health outcomes. To date, evidence for morbidity in trainees is largely derived from cross-sectional survey-based research. This limits the accuracy of estimates and the extent to which predispositional vulnerabilities (biological and/or psychological), contextual triggers and longer-term consequences can be validly identified...
September 11, 2017: BMJ Open
https://www.readbyqxmd.com/read/28891505/sleep-microstructure-dynamics-and-neurocognitive-performance-in-obstructive-sleep-apnea-syndrome-patients
#12
Foroozan Karimzadeh, Mohammad Nami, Reza Boostani
The present study examined the relationship between the increment in cyclic alternating patterns (CAPs) in sleep electroencephalography and neurocognitive decline in obstructive Sleep Apnea Syndrome (OSAS) patients through source localization of the phase-A of CAPs. All-night polysomnographic recordings of 10 OSAS patients and 4 control subjects along with their cognitive profile using the Addenbrooke's Cognitive Examination (ACE) test were acquired. The neuropsychological assessment involved five key domains including attention and orientation, verbal fluency, memory, language and visuo-spatial skills...
2017: Journal of Integrative Neuroscience
https://www.readbyqxmd.com/read/28891117/the-sleeping-patterns-of-head-start-children-and-the-influence-on-developmental-outcomes
#13
M Schlieber, J Han
BACKGROUND: Sleep has a significant influence on children's development. The objective of this study was to investigate Head Start children's sleeping patterns and the impact on cognitive and behavioural outcomes. METHODS: Using the 2009 cohort of the Head Start Family and Child Experiences Survey (N = 2,868), information on sleeping patterns was assessed through parent interviews. Cognitive outcomes were assessed using direct assessments (Peabody Picture Vocabulary Test-IV, the Expressive One-Word Picture Vocabulary Test, and Subtests of the Woodcock-Johnson III) in addition to teacher report...
September 11, 2017: Child: Care, Health and Development
https://www.readbyqxmd.com/read/28888616/physical-functioning-and-risk-for-sleep-disorders-in-us-adults-results-from-the-national-health-and-nutrition-examination-survey-2005-2014
#14
S Puri, J E Herrick, J P Collins, M Aldhahi, B Baattaiah
OBJECTIVES: Sleep disorders (SDs), particularly problems with falling asleep or daytime sleepiness, have negative impact on health and longevity. Sleep deprivation is also associated with a decline in physical functioning (PF) that mediates the ability to perform activities of daily living. But it remains unknown if deterioration in PF can predict the risk of having a SD. Therefore, the purpose of the present study is to assess the risk of SD associated with PF status in the US adult population...
September 7, 2017: Public Health
https://www.readbyqxmd.com/read/28882808/mobile-phone-interventions-for-sleep-disorders-and-sleep-quality-systematic-review
#15
REVIEW
Jong Cheol Shin, Julia Kim, Diana Grigsby-Toussaint
BACKGROUND: Although mobile health technologies have been developed for interventions to improve sleep disorders and sleep quality, evidence of their effectiveness remains limited. OBJECTIVE: A systematic literature review was performed to determine the effectiveness of mobile technology interventions for improving sleep disorders and sleep quality. METHODS: Four electronic databases (EBSCOhost, PubMed/Medline, Scopus, and Web of Science) were searched for articles on mobile technology and sleep interventions published between January 1983 and December 2016...
September 7, 2017: JMIR MHealth and UHealth
https://www.readbyqxmd.com/read/28882722/cognition-in-patients-with-benign-epilepsy-with-centrotemporal-spikes-a-study-with-long-term-veeg-and-rs-fmri
#16
Xinxin Yan, Qing Yu, Yuting Gao, Liting Li, Danhua Yu, Ying Chen, Xiaojuan Yao, Weidong Yang, Zhijuan Chen, Jianzhong Yin, Yang An, Ke Tan
OBJECTIVE: The purpose of this study was to investigate the relationship between alterations of functional brain network and cognition in patients with benign epilepsy with centrotemporal spikes (BECTS) as a function of spike-wave index (SWI) during slow wave sleep. METHODS: Resting-state functional magnetic resonance imaging (RS-fMRI) data and Intelligence Quotient (IQ) were collected from two groups of patients with BECTS, including a SWI<50% group (5 cases) and a SWI≥50% group (7 cases)...
September 4, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28871379/discrepancy-between-subjective-and-objective-measures-of-cognitive-impairment-in-patients-with-rheumatoid-arthritis
#17
Bo Young Yoon, Joo-Hyun Lee, So Young Shin
This study explored the discrepancy between perceived cognitive dysfunction and computerized neuropsychological test performance in Korean patients with RA. Individuals with RA were recruited by their rheumatologists during follow-up visits at one hospital in Korea. After getting signed consents, a trained research nurse assessed participants with a range of physical, psychosocial, and biological metrics. Subjective cognitive dysfunction was assessed using the Perceived Deficits Questionnaire (PDQ; range 0-20)...
September 4, 2017: Rheumatology International
https://www.readbyqxmd.com/read/28869823/evidence-of-perceptive-impairment-in-osa-patients-investigated-by-means-of-a-visual-search-task
#18
Enrico Giora, Andrea Galbiati, Sara Marelli, Marco Zucconi, Luigi Ferini-Strambi
Obstructive Sleep Apnoea (OSA) is a common sleep disorder characterized by episodes of complete or partial obstruction of respiratory airways during sleep that leads to hypoxaemia and sleep fragmentation. One relevant daytime consequence of OSA is a negative impact on neurocognitive domain, ranging from psychomotor performance to executive function. In spite of a huge amount of evidence regarding cognitive impairment, little is known about perceptual processing in these patients. The aim of this research is to investigate the effects of OSA on visual mechanisms by employing a visual search paradigm...
August 9, 2017: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/28857317/the-impact-of-long-work-hours-and-shift-work-on-cognitive-errors-in-nurses
#19
Ann Rhéaume, Jane Mullen
AIM: Pilot study to examine the impact of long work hours and shift work on cognitive errors in nurses. BACKGROUND: Twelve-hour shifts are more commonly used in hospital settings and there is growing concern over the impact that extended and irregular work hours have on nurses' well-being and performance. METHOD: Twenty-eight nurses working different shifts (8-hr days and 12-hr rotation) participated in this study. Nurses were assessed at the beginning of four consecutive shifts using actigraphy, a sleep diary and an after work questionnaire...
August 30, 2017: Journal of Nursing Management
https://www.readbyqxmd.com/read/28829224/the-mmpi-2-mmpi-2-rf-symptom-validity-scale-fbs-fbs-r-is-not-a-measure-of-litigation-response-syndrome-commentary-on-nichols-and-gass-2015
#20
Glenn J Larrabee, Kevin J Bianchini, Kyle B Boone, Martin L Rohling
OBJECTIVES: To address (1) Whether there is empirical evidence for the contention of Nichols and Gass that the MMPI-2/MMPI-2-RF FBS/FBS-r Symptom Validity Scale is a measure of Litigation Response Syndrome (LRS), representing a credible set of responses and reactions of claimants to the experience of being in litigation, rather than a measure of non-credible symptom report, as the scale is typically used; and (2) to address their stated concerns about the validity of FBS/FBS-r meta-analytic results, and the risk of false positive elevations in persons with bona-fide medical conditions...
August 22, 2017: Clinical Neuropsychologist
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