keyword
MENU ▼
Read by QxMD icon Read
search

sleep light cognitive performance

keyword
https://www.readbyqxmd.com/read/27851868/pharmacotherapies-for-sleep-disturbances-in-dementia
#1
REVIEW
Jenny McCleery, Daniel A Cohen, Ann L Sharpley
BACKGROUND: Sleep disturbances, including reduced nocturnal sleep time, sleep fragmentation, nocturnal wandering, and daytime sleepiness are common clinical problems in dementia, and are associated with significant caregiver distress, increased healthcare costs, and institutionalisation. Drug treatment is often sought to alleviate these problems, but there is significant uncertainty about the efficacy and adverse effects of the various hypnotic drugs in this vulnerable population. OBJECTIVES: To assess the effects, including common adverse effects, of any drug treatment versus placebo for sleep disorders in people with dementia, through identification and analysis of all relevant randomised controlled trials (RCTs)...
November 16, 2016: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/27847492/post-training-meditation-promotes-motor-memory-consolidation
#2
Maarten A Immink
Following training, motor memory consolidation is thought to involve either memory stabilization or off-line learning processes. The extent to which memory stabilization or off-line learning relies on post-training wakeful periods or sleep is not clear and thus, novel research approaches are needed to further explore the conditions that promote motor memory consolidation. The present experiment represents the first empirical test of meditation as potential facilitator of motor memory consolidation. Twelve adult residents of a yoga center with a mean of 9 years meditation experience were trained on a sequence key pressing task...
2016: Frontiers in Psychology
https://www.readbyqxmd.com/read/27827445/decrease-in-fmri-brain-activation-during-working-memory-performed-after-sleeping-under-10-lux-light
#3
Seung-Gul Kang, Ho-Kyoung Yoon, Chul-Hyun Cho, Soonwook Kwon, June Kang, Young-Min Park, Eunil Lee, Leen Kim, Heon-Jeong Lee
The aim of this study was to investigate the effect of exposure to dim light at night (dLAN) when sleeping on functional brain activation during a working-memory tasks. We conducted the brain functional magnetic resonance imaging (fMRI) analysis on 20 healthy male subjects. All participants slept in a polysomnography laboratory without light exposure on the first and second nights and under a dim-light condition of either 5 or 10 lux on the third night. The fMRI scanning was conducted during n-back tasks after second and third nights...
November 9, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27810186/cortical-afferent-inhibition-reflects-cognitive-impairment-in-obstructive-sleep-apnea-syndrome-a-tms-study
#4
Raffaele Nardone, Jürgen Bergmann, Francesco Brigo, Yvonne Höller, Kerstin Schwenker, Cristina Florea, Alexander B Kunz, Stefan Golaszewski, Eugen Trinka
OBJECTIVES: Patients with obstructive sleep apnea syndrome (OSAS) show neurocognitive impairment, but the exact mechanisms that cause cognitive dysfunctions remain unknown. The cholinergic system is known to play a key role in all attentional processes and cognitive functions. A transcranial magnetic stimulation (TMS) protocol may give direct information about the function of some cholinergic circuits in the human brain; this technique relies on short latency afferent inhibition (SAI) of the motor cortex...
August 2016: Sleep Medicine
https://www.readbyqxmd.com/read/27769202/a-double-blind-randomized-controlled-trial-to-assess-the-effect-of-bright-light-therapy-on-depression-in-patients-with-parkinson-s-disease
#5
Sonja Rutten, Chris Vriend, Jan H Smit, Henk W Berendse, Adriaan W Hoogendoorn, Odile A van den Heuvel, Ysbrand D van der Werf
BACKGROUND: A disturbed circadian rhythm seems to be a causal factor in the occurrence of depressive disorders in patients with Parkinson's disease (PD). The circadian rhythm can be restored with light. Therefore, Bright Light Therapy (BLT) might be a new treatment option for depression in PD patients. METHODS/DESIGN: In this double-blind controlled trial, 84 subjects with idiopathic PD are randomized to either BLT or a control light condition. The BLT condition emits white light with an intensity of 10,000 Lux, while the control device emits dim white light of 200 Lux, which is presumed to be too low to influence the circadian rhythm...
October 21, 2016: BMC Psychiatry
https://www.readbyqxmd.com/read/27646310/sleep-deprivation-effects-on-object-discrimination-task-in-zebrafish-danio-rerio
#6
Jaquelinne Pinheiro-da-Silva, Priscila Fernandes Silva, Marcelo Borges Nogueira, Ana Carolina Luchiari
The zebrafish is an ideal vertebrate model for neurobehavioral studies with translational relevance to humans. Many aspects of sleep have been studied, but we still do not understand how and why sleep deprivation alters behavioral and physiological processes. A number of hypotheses suggest its role in memory consolidation. In this respect, the aim of this study was to analyze the effects of sleep deprivation on memory in zebrafish (Danio rerio), using an object discrimination paradigm. Four treatments were tested: control, partial sleep deprivation, total sleep deprivation by light pulses, and total sleep deprivation by extended light...
September 19, 2016: Animal Cognition
https://www.readbyqxmd.com/read/27630549/altered-electroencephalographic-activity-associated-with-changes-in-the-sleep-wakefulness-cycle-of-c57bl-6j-mice-in-response-to-a-photoperiod-shortening
#7
Stanislav V Rozov, Janneke C Zant, Kestutis Gurevicius, Tarja Porkka-Heiskanen, Pertti Panula
AIM: Under natural conditions diurnal rhythms of biological processes of the organism are synchronized with each other and to the environmental changes by means of the circadian system. Disturbances of the latter affect hormonal levels, sleep-wakefulness cycle and cognitive performance. To study mechanisms of such perturbations animal models subjected to artificial photoperiods are often used. The goal of current study was to understand the effects of circadian rhythm disruption, caused by a short light-dark cycle regime, on activity of the cerebral cortex in rodents...
2016: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/27570193/normal-weight-children-have-higher-cognitive-performance-independent-of-physical-activity-sleep-and-diet
#8
Mads F Hjorth, Louise B Sørensen, Rikke Andersen, Camilla B Dyssegaard, Christian Ritz, Inge Tetens, Kim F Michaelsen, Arne Astrup, Niels Egelund, Anders Sjödin
BACKGROUND/OBJECTIVES: Aside from the health consequences, observational studies indicate that being overweight may also negatively affect cognitive function. However, existing evidence has to a large extent not controlled for the possible confounding effect of having different lifestyles. Therefore, the objective was to examine the independent associations between weight status and lifestyle indicators with cognitive performance in 8-11year old Danish children. SUBJECTS/METHODS: The analyses included 828 children (measured in 2011-2012) each having one to three measurement occasions separated by approximately 100days...
October 15, 2016: Physiology & Behavior
https://www.readbyqxmd.com/read/27486484/prevention-of-fatigue-and-insomnia-in-shift-workers-a-review-of-non-pharmacological-measures
#9
REVIEW
Kneginja Richter, Jens Acker, Sophia Adam, Guenter Niklewski
BACKGROUND: Excessive fatigue and insomnia are common among shift workers and can lead to negative effects such as reduced work performance, processing errors, accidents at work, absenteeism, reduced quality of life, and symptoms of depression. Moreover, work in rotating shifts can be a risk factor for different somatic and psychiatric diseases and may contribute to poor health, especially in elder adults and women. This review aims to show non-pharmacological preventive measures against fatigue and insomnia in shift workers...
2016: EPMA Journal
https://www.readbyqxmd.com/read/27478646/sleep-spindle-characteristics-in-children-with-neurodevelopmental-disorders-and-their-relation-to-cognition
#10
REVIEW
Reut Gruber, Merrill S Wise
Empirical evidence indicates that sleep spindles facilitate neuroplasticity and "off-line" processing during sleep, which supports learning, memory consolidation, and intellectual performance. Children with neurodevelopmental disorders (NDDs) exhibit characteristics that may increase both the risk for and vulnerability to abnormal spindle generation. Despite the high prevalence of sleep problems and cognitive deficits in children with NDD, only a few studies have examined the putative association between spindle characteristics and cognitive function...
2016: Neural Plasticity
https://www.readbyqxmd.com/read/27470330/shining-evolutionary-light-on-human-sleep-and-sleep-disorders
#11
REVIEW
Charles L Nunn, David R Samson, Andrew D Krystal
Sleep is essential to cognitive function and health in humans, yet the ultimate reasons for sleep-i.e. 'why' sleep evolved-remain mysterious. We integrate findings from human sleep studies, the ethnographic record, and the ecology and evolution of mammalian sleep to better understand sleep along the human lineage and in the modern world. Compared to other primates, sleep in great apes has undergone substantial evolutionary change, with all great apes building a sleeping platform or 'nest'. Further evolutionary change characterizes human sleep, with humans having the shortest sleep duration, yet the highest proportion of rapid eye movement sleep among primates...
2016: Evolution, Medicine, and Public Health
https://www.readbyqxmd.com/read/27426512/chemogenetic-activation-of-melanopsin-retinal-ganglion-cells-induces-signatures-of-arousal-and-or-anxiety-in-mice
#12
Nina Milosavljevic, Jasmina Cehajic-Kapetanovic, Christopher A Procyk, Robert J Lucas
Functional imaging and psychometric assessments indicate that bright light can enhance mood, attention, and cognitive performance in humans. Indirect evidence links these events to light detection by intrinsically photosensitive melanopsin-expressing retinal ganglion cells (mRGCs) [1-9]. However, there is currently no direct demonstration that mRGCs can have such an immediate effect on mood or behavioral state in any species. We addressed this deficit by using chemogenetics to selectively activate mRGCs, simulating the excitatory effects of bright light on this cell type in dark-housed mice...
September 12, 2016: Current Biology: CB
https://www.readbyqxmd.com/read/27321089/-obstructive-sleep-apnea-syndrome-and-cognition-a-review
#13
REVIEW
Agnès Daurat, Majdouline Sarhane, Michel Tiberge
Obstructive sleep apnea syndrome (OSAS) is a sleep-related breathing disorder characterized by repetitive episodes of airflow cessation, resulting in brief arousals and intermittent hypoxemia. OSAS is associated with a number of adverse health consequences, and cognitive difficulties. The overall pattern of cognitive impairment in OSAS is complex, and research in this field is mixed. On balance, OSAS have negative effects on cognition, most likely in the domain of attention/vigilance, verbal and visual delayed long-term memory, and executive functions...
June 2016: Neurophysiologie Clinique, Clinical Neurophysiology
https://www.readbyqxmd.com/read/27303633/hypnotic-drug-risks-of-mortality-infection-depression-and-cancer-but-lack-of-benefit
#14
REVIEW
Daniel F Kripke
This is a review of hypnotic drug risks and benefits, reassessing and updating advice presented to the Commissioner of the Food and Drug Administration (United States FDA). Almost every month, new information appears about the risks of hypnotics (sleeping pills). This review includes new information on the growing USA overdose epidemic, eight new epidemiologic studies of hypnotics' mortality not available for previous compilations, and new emphasis on risks of short-term hypnotic prescription. The most important risks of hypnotics include excess mortality, especially overdose deaths, quiet deaths at night, infections, cancer, depression and suicide, automobile crashes, falls, and other accidents, and hypnotic-withdrawal insomnia...
2016: F1000Research
https://www.readbyqxmd.com/read/26985134/impact-of-ramadan-intermittent-fasting-on-cognitive-function-in-trained-cyclists-a-pilot-study
#15
K Chamari, W Briki, A Farooq, T Patrick, T Belfekih, C P Herrera
This study assessed selected measures of cognitive function in trained cyclists who observed daylight fasting during Ramadan. Eleven cyclists volunteered to participate (age: 21.6±4.8 years, VO2max: 57.7±5.6 ml kg(-1)·min(-1)) and were followed for 2 months. Cognitive function (Cambridge Neuropsychological Test Automated Battery (CANTAB), Reaction Time index (RTI) and Rapid Visual Information Processing (RVP) tests) and sleep architecture (ambulatory EEG) were assessed: before Ramadan (BR), in the 1st week (RA1) and 4th week of Ramadan (RA4), and 2 weeks post-Ramadan (PR)...
March 2016: Biology of Sport
https://www.readbyqxmd.com/read/26980095/light-sensitive-brain-pathways-and-aging
#16
REVIEW
V Daneault, M Dumont, É Massé, G Vandewalle, J Carrier
Notwithstanding its effects on the classical visual system allowing image formation, light acts upon several non-image-forming (NIF) functions including body temperature, hormonal secretions, sleep-wake cycle, alertness, and cognitive performance. Studies have shown that NIF functions are maximally sensitive to blue wavelengths (460-480 nm), in comparison to longer light wavelengths. Higher blue light sensitivity has been reported for melatonin suppression, pupillary constriction, vigilance, and performance improvement but also for modulation of cognitive brain functions...
March 15, 2016: Journal of Physiological Anthropology
https://www.readbyqxmd.com/read/26955885/genome-wide-association-analysis-identifies-novel-loci-for-chronotype-in-100-420-individuals-from-the-uk-biobank
#17
Jacqueline M Lane, Irma Vlasac, Simon G Anderson, Simon D Kyle, William G Dixon, David A Bechtold, Shubhroz Gill, Max A Little, Annemarie Luik, Andrew Loudon, Richard Emsley, Frank A J L Scheer, Deborah A Lawlor, Susan Redline, David W Ray, Martin K Rutter, Richa Saxena
Our sleep timing preference, or chronotype, is a manifestation of our internal biological clock. Variation in chronotype has been linked to sleep disorders, cognitive and physical performance, and chronic disease. Here we perform a genome-wide association study of self-reported chronotype within the UK Biobank cohort (n=100,420). We identify 12 new genetic loci that implicate known components of the circadian clock machinery and point to previously unstudied genetic variants and candidate genes that might modulate core circadian rhythms or light-sensing pathways...
March 9, 2016: Nature Communications
https://www.readbyqxmd.com/read/26379546/measuring-physical-activity-in-older-adults-calibrating-cut-points-for-the-motionwatch-8-%C3%A2
#18
Glenn J Landry, Ryan S Falck, Michael W Beets, Teresa Liu-Ambrose
Given the world's aging population, the staggering economic impact of dementia, the lack of effective treatments, and the fact a cure for dementia is likely many years away - there is an urgent need to develop interventions to prevent or at least delay dementia's progression. Thus, lifestyle approaches to promote healthy aging are an important line of scientific inquiry. Good sleep quality and physical activity (PA) are pillars of healthy aging, and as such, are an increasing focus for intervention studies aimed at promoting health and cognitive function in older adults...
2015: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/26317088/circadian-levels-of-serum-melatonin-and-cortisol-in-relation-to-changes-in-mood-sleep-and-neurocognitive-performance-spanning-a-year-of-residence-in-antarctica
#19
Madhumita Premkumar, Tarulata Sable, Dinesh Dhanwal, Richa Dewan
Background. Altered circadian cortisol and melatonin rhythms in healthy subjects exposed to an extreme polar photoperiod results in changes in mood and sleep, which can influence cognitive performance. Materials and Methods. We assessed the circadian rhythm of 20 subjects who wintered over at Maitri (70°S, 11°E), India's permanent Antarctic station, from November 2010 to December 2011. Serum cortisol and melatonin levels were measured by radioimmunoassay at 8 am, 3 pm, 8 pm, and 2 am in a single day, once each during the polar summer and winter photoperiods...
2013: Neuroscience Journal
https://www.readbyqxmd.com/read/26206724/stress-sleep-and-recovery-in-elite-soccer-a-critical-review-of-the-literature
#20
REVIEW
Mathieu Nédélec, Shona Halson, Abd-Elbasset Abaidia, Said Ahmaidi, Gregory Dupont
In elite soccer, players are frequently exposed to various situations and conditions that can interfere with sleep, potentially leading to sleep deprivation. This article provides a comprehensive and critical review of the current available literature regarding the potential acute and chronic stressors (i.e., psychological, sociological and physiological stressors) placed on elite soccer players that may result in compromised sleep quantity and/or quality. Sleep is an essential part of the recovery process as it provides a number of important psychological and physiological functions...
October 2015: Sports Medicine
keyword
keyword
74611
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"