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https://www.readbyqxmd.com/read/29341785/total-sleep-deprivation-does-not-significantly-degrade-semantic-encoding
#1
K A Honn, D A Grant, J M Hinson, P Whitney, Hpa Van Dongen
Sleep deprivation impairs performance on cognitive tasks, but it is unclear which cognitive processes it degrades. We administered a semantic matching task with variable stimulus onset asynchrony (SOA) and both speeded and self-paced trial blocks. The task was administered at the baseline and 24 hours later after 30.8 hours of total sleep deprivation (TSD) or matching well-rested control. After sleep deprivation, the 20% slowest response times (RTs) were significantly increased. However, the semantic encoding time component of the RTs remained at baseline level...
January 17, 2018: Chronobiology International
https://www.readbyqxmd.com/read/29338982/involvement-of-peripheral-alpha2a-adrenoceptor-in-the-acceleration-of-gastrointestinal-transit-and-abdominal-visceral-pain-induced-by-intermittent-deprivation-of-rem-sleep
#2
Fukie Yaoita, Masamichi Muto, Hiroki Murakami, Shiori Endo, Mifuyu Kozawa, Masahiro Tsuchiya, Takeshi Tadano, Koichi Tan-No
Many studies have associated sleep alterations with the severity of irritable bowel syndrome (IBS) symptoms, but the direct pathophysiological relationship has not been clarified. In addition, alterations in noradrenergic signaling have been implicated in the pathophysiology of IBS, and alpha2-adrenoceptors are potential treatment targets. We have previously shown that acceleration of gastrointestinal transit (GIT) elicited by intermittent rapid eye movement (REM) sleep deprivation stress may fulfill the profile of a model of IBS...
January 12, 2018: Physiology & Behavior
https://www.readbyqxmd.com/read/29332685/sleep-patterns-in-children-differ-by-ethnicity-cross-sectional-and-longitudinal-analyses-using-actigraphy
#3
Tevita F W Vaipuna, Sheila M Williams, Victoria L Farmer, Kim A Meredith-Jones, Rosalina Richards, Barbara C Galland, Lisa Te Morenga, Rachael W Taylor
OBJECTIVES: To determine whether sleep patterns (duration, timing, efficiency) differ by ethnicity. DESIGN: Longitudinal study. SETTING: Dunedin, New Zealand. PARTICIPANTS: A total of 939 children (48% male) aged 4-12 years (572 European, 181 Māori, 111 Pacific, 75 Asian). MEASUREMENTS: All measurements were obtained at months 0, 12, and 24. Anthropometry was obtained using standard techniques, and parents completed questionnaires assessing demographics, dietary intake, and television habits of children...
February 2018: Sleep Health
https://www.readbyqxmd.com/read/29332672/motivational-factors-associated-with-drowsy-driving-behavior-a-qualitative-investigation-of-college-students
#4
Kenneth H Beck, Clark J Lee, Talia Weiner
OBJECTIVES: This qualitative investigation sought to identify the motivational factors that contribute to drowsy driving in college students and to discover important messaging strategies that may help prevent or reduce this behavior in this population. DESIGN: Four focus groups of college students. SETTING: A large university in the Washington, DC, metropolitan area during the Fall 2016 term. PARTICIPANTS: Twenty-six undergraduate students between the ages of 18 and 25 years...
February 2018: Sleep Health
https://www.readbyqxmd.com/read/29331696/does-early-response-predict-subsequent-remission-in-bipolar-depression-treated-with-repeated-sleep-deprivation-combined-with-light-therapy-and-lithium
#5
Masahiro Suzuki, Sara Dallaspezia, Clara Locatelli, Makoto Uchiyama, Cristina Colombo, Francesco Benedetti
BACKGROUND: The combination of three cycles of sleep deprivation (SD), light therapy (LT), and lithium has recently been proposed as a possible first-line treatment for bipolar depression. However, it is unclear whether early improvement predicts final response/remission in bipolar depression treated with this regimen. METHOD: We studied 220 consecutively admitted inpatients with a major depressive episode in the course of bipolar disorder. The relation between response to first SD and response/remission at the end of the treatment (day 6) was analyzed using logistic regression analysis...
January 2, 2018: Journal of Affective Disorders
https://www.readbyqxmd.com/read/29325962/systematic-review-of-factors-influencing-surgical-performance-practical-recommendations-for-microsurgical-procedures-in-neurosurgery
#6
Evgenii Belykh, Naomi R Onaka, Iraklii T Abramov, Kaan Yağmurlu, Vadim A Byvaltsev, Robert F Spetzler, Peter Nakaji, Mark C Preul
BACKGROUND: Microneurosurgical techniques involve complex manual skills and hand-eye coordination that require substantial training. Many factors affect microneurosurgical skills. The goal of this study was to use a systematic evidence-based approach to analyze the quality of evidence for intrinsic and extrinsic factors that influence microneurosurgical performance and to make weighted practical recommendations. MATERIALS AND METHODS: A literature search of factors that may impact microsurgical performance was conducted using PubMed and Embase...
January 8, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29323936/sleep-research-a-primer-for-media-scholars
#7
Liese Exelmans, Jan Van den Bulck
The average amount of sleep people of all ages get has declined sharply in the past 50 years. The detrimental health effects of sleep deprivation are well documented and substantial. Even though electronic media use often takes place in the hours before sleep, the extent to which media use may interact with sleep is understudied and not well understood. Communication scholars are well positioned to contribute to this area, as a systematic, theoretical understanding of the relationship between media and sleep is still lacking...
January 11, 2018: Health Communication
https://www.readbyqxmd.com/read/29318855/-effects-of-acupuncture-at-shenmen-ht-7-on-brainwaves-and-cognitive-ability-in-rats-with-sleep-deprivation
#8
Jia Li, Jiao-Ping Liu
OBJECTIVE: To observe the effects of acupuncture at "Shenmen" (HT 7) on brainwaves and cognitive ability in rats with sleep deprivation. METHODS: SD rats were randomly divided into control group, model group, acupuncture group and sham acupuncture group, 15 rats in each group. Insomnia model rats were established by sleep deprivation for 72 hours. Acupuncture was applied to acupuncture group at bilateral "Shenmen" (HT 7) for 20 min, once daily for 7 days. Rats in the sham acupuncture group received superficial insertion of 1 mm and without retaining needle...
December 25, 2017: Zhen Ci Yan Jiu, Acupuncture Research
https://www.readbyqxmd.com/read/29317057/the-complex-associations-between-obstructive-sleep-apnea-and-auto-immune-disorders-a-review
#9
Mayand Vakil, Steven Park, Anna Broder
Obstructive sleep apnea is known to be associated with diseases such as hypertension, metabolic disorder, and cancer. A more controversial and less understood association is that of sleep apneas and the development and worsening of autoimmune and rheumatologic disorders. Through the main pathways of intermittent hypoxia and sleep deprivation, we hypothesize that obstructive sleep apnea creates a chronic inflammatory state that worsens or incites autoimmune disorders. This thorough review of the available literature highlights our current understanding of the relationship between these disease processes in order to demonstrate the importance of diagnosis and appropriate management of sleep disorders in patients suffering from rheumatologic diseases...
January 2018: Medical Hypotheses
https://www.readbyqxmd.com/read/29314592/impact-of-sleep-deprivation-on-the-outcomes-of-percutaneous-coronary-intervention
#10
Ann Iverson, Larissa Stanberry, Ross Garberich, Amber Antos, Yader Sandoval, M Nicholas Burke, Ivan Chavez, Mario Gössl, Timothy D Henry, Daniel Lips, Michael Mooney, Anil Poulose, Paul Sorajja, Jay Traverse, Yale Wang, Steven Bradley, Emmanouil S Brilakis
No abstract text is available yet for this article.
January 3, 2018: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/29308828/propofol-for-the-promotion-of-sleep-in-adults-in-the-intensive-care-unit
#11
REVIEW
Sharon R Lewis, Oliver J Schofield-Robinson, Phil Alderson, Andrew F Smith
BACKGROUND: People in the intensive care unit (ICU) experience sleep deprivation caused by environmental disruption, such as high noise levels and 24-hour lighting, as well as increased patient care activities and invasive monitoring as part of their care. Sleep deprivation affects physical and psychological health, and people perceive the quality of their sleep to be poor whilst in the ICU. Propofol is an anaesthetic agent which can be used in the ICU to maintain patient sedation and some studies suggest it may be a suitable agent to replicate normal sleep...
January 8, 2018: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29307593/transcranial-near-infrared-photobiomodulation-attenuates-memory-impairment-and-hippocampal-oxidative-stress-in-sleep-deprived-mice
#12
Farzad Salehpour, Fereshteh Farajdokht, Marjan Erfani, Saeed Sadigh-Eteghad, Siamak Sandoghchian Shotorbani, Michael R Hamblin, Pouran Karimi, Seyed Hossein Rasta, Javad Mahmoudi
Sleep deprivation (SD) causes oxidative stress in the hippocampus and subsequent memory impairment. In this study, the effect of near-infrared (NIR) photobiomodulation (PBM) on learning and memory impairment induced by acute SD was investigated. The mice were subjected to an acute SD protocol for 72 hr. Simultaneously, NIR PBM using a laser at 810 nm was delivered (once a day for 3 days) transcranially to the head to affect the entire brain of mice. The Barnes maze and the What-Where-Which task were used to assess spatial and episodic-like memories...
January 4, 2018: Brain Research
https://www.readbyqxmd.com/read/29307314/shift-work-is-time-of-eating-determining-metabolic-health-evidence-from-animal-models
#13
Natalí N Guerrero-Vargas, Estefania Espitia-Bautista, Ruud M Buijs, Carolina Escobar
The circadian disruption in shift-workers is suggested to be a risk factor to develop overweight and metabolic dysfunction. The conflicting time signals given by shifted activity, shifted food intake and exposure to light at night occurring in the shift-worker are proposed to be the cause for the loss of internal synchrony and the consequent adverse effects on body weight and metabolism. Because food elicited signals have proven to be potent entraining signals for peripheral oscillations, here we review the findings from experimental models of shift-work and verify whether they provide evidence about the causal association between shifted feeding schedules, circadian disruption and altered metabolism...
January 8, 2018: Proceedings of the Nutrition Society
https://www.readbyqxmd.com/read/29302615/homeostatic-changes-in-gaba-and-acetylcholine-muscarinic-receptors-on-gabaergic-neurons-in-the-mesencephalic-reticular-formation-following-sleep-deprivation
#14
Hanieh Toossi, Esther Del Cid-Pellitero, Barbara E Jones
We have examined whether GABAergic neurons in the mesencephalic reticular formation (RFMes), which are believed to inhibit the neurons in the pons that generate paradoxical sleep (PS or REMS), are submitted to homeostatic regulation under conditions of sleep deprivation (SD) by enforced waking during the day in mice. Using immunofluorescence, we investigated first, by staining for c-Fos, whether GABAergic RFMes neurons are active during SD and then, by staining for receptors, whether their activity is associated with homeostatic changes in GABAA or acetylcholine muscarinic type 2 (AChM2) receptors (Rs), which evoke inhibition...
November 2017: ENeuro
https://www.readbyqxmd.com/read/29299201/acute-sleep-deprivation-preconditions-the-heart-against-ischemia-reperfusion-injury-the-role-of-central-gaba-a-receptors
#15
Hoda Parsa, Alireza Imani, Mahdieh Faghihi, Esmail Riahi, Mohammad Badavi, Abbas Shakoori, Tayebeh Rastegar, Marjan Aghajani, Sulail Fatima Rajani
Objectives: Central γ-aminobutyric acid (GABA) neurotransmission modulates cardiovascular functions and sleep. Acute sleep deprivation (ASD) affects functions of various body organs via different mechanisms. Here, we evaluated the effect of ASD on cardiac ischemia/reperfusion injury (IRI), and studied the role of GABA-A receptor inhibition in central nucleus of amygdala (CeA) by assessing nitric oxide (NO) and oxidative stress. Materials and Methods: The CeA in sixty male Wistar rats was cannulated for saline or bicuculline (GABA-A receptor antagonist) administration...
November 2017: Iranian Journal of Basic Medical Sciences
https://www.readbyqxmd.com/read/29297761/an-improved-model-to-predict-performance-under-mental-fatigue
#16
Henry T Peng, Fethi Bouak, Wenbi Wang, Renee Chow, Oshin Vartanian
Fatigue has become an increasing problem in our modern society. Using MATLAB as a generic modelling tool, a fatigue model was developed based on an existing one and compared with a commercial fatigue software for prediction of cognitive performance under total and partial sleep deprivation. The flexibility of our fatigue model allowed additions of new algorithms and mechanisms for non-sleep factors and countermeasures and thus improved model predictions and usability for both civilian and military applications...
January 8, 2018: Ergonomics
https://www.readbyqxmd.com/read/29291035/the-potential-use-of-physical-resilience-to-predict-healthy-aging
#17
REVIEW
Anna Schorr, Christy Carter, Warren Ladiges
Physical resilience is the ability of an organism to respond to stressors that acutely disrupt normal physiological homeostasis. By definition, resilience decreases with increasing age, while frailty, defined as a decline in tissue function, increases with increasing age. Assessment of resilience could therefore be an informative early paradigm to predict healthy aging compared to frailty, which measures late life dysfunction. Parameters for resilience in the laboratory mouse are not yet well defined, and no single standardized stress test exists...
2018: Pathobiology of Aging & Age related Diseases
https://www.readbyqxmd.com/read/29290595/the-media-response-to-the-acgme-s-2017-relaxed-resident-duty-hour-restrictions
#18
Zi Zhang, Alan V Krauthamer, Andrew B Rosenkrantz
PURPOSE: In March 2017, the ACGME relaxed resident duty-hour restrictions to allow first-year residents to work 24-hour shifts, affecting the internship experience of incoming radiology residents. The aim of this study was to assess the media response to this duty-hour change, comparing news articles with favorable and unfavorable views. METHODS: Google News was used to identify 36 relevant unique news articles published over a 4-week period after the announcement...
December 28, 2017: Journal of the American College of Radiology: JACR
https://www.readbyqxmd.com/read/29287793/the-protective-effect-of-20-s-protopanaxadiol-ppd-against-chronic-sleep-deprivation-csd-induced-memory-impairments-in-mice
#19
Cong Lu, Liming Dong, Jingwei Lv, Yan Wang, Bei Fan, Fengzhong Wang, Xinmin Liu
Sleep deprivation (SD) is associated with oxidative stress that causes learning and memory impairment. 20(S)-Protopanaxadiol (PPD), one of the protopanaxadiol-type saponins, has antioxidant and neuroprotective effect. This study was designed to research the protective effect of PPD against cognitive deficits induced by chronic sleep deprivation (CSD) in mice. The CSD model was induced by subjecting the mice to our self-made Sleep Interruption Apparatus (SIA) continuously for 14 days. The memory enhancing effects of PPD were evaluated by behavioral tests and the related mechanism was further explored by observing the oxidative stress changes in the cortex and hippocampus of mice...
December 26, 2017: Brain Research Bulletin
https://www.readbyqxmd.com/read/29284109/morin-hydrate-mitigates-rapid-eye-movement-sleep-deprivation-induced-neurobehavioural-impairments-and-loss-of-viable-neurons-in-the-hippocampus-of-mice
#20
Elizabeth T Olonode, Adegbuyi O Aderibigbe, Olusegun A Adeoluwa, Anthony T Eduviere, Benneth Ben-Azu
Rapid eye movement sleep deprivation distorts the body's homeostasis and results in oxidative breakdown which may be responsible for a variety of neurological disorders. Some naturally occurring compounds of plant origin with antioxidant and neuroprotective properties are known to attenuate the detrimental effects of REM sleep deprivation. Morin hydrate, a flavonoid from Mulberry has demonstrated antioxidant and neuroprotective activities but its effect in sleep disturbed mice is unknown. The study was designed to explore the neuroprotective effect of Morin hydrate on 48 hr...
December 25, 2017: Behavioural Brain Research
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