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https://www.readbyqxmd.com/read/29244813/a-different-view-on-the-necker-cube-differences-in-multistable-perception-dynamics-between-asperger-and-non-asperger-observers
#1
Jürgen Kornmeier, Rike Wörner, Andreas Riedel, Ludger Tebartz van Elst
BACKGROUND: During observation of the Necker cube perception becomes unstable and alternates repeatedly between a from-above-perspective ("fap") and a from-below-perspective ("fbp") interpretation. Both interpretations are physically equally plausible, however, observers usually show an a priori top-down bias in favor of the fap interpretation. Patients with Autism spectrum disorder are known to show an altered pattern of perception with a focus on sensory details. In the present study we tested whether this altered perceptual processing affects their reversal dynamics and reduces the perceptual bias during Necker cube observation...
2017: PloS One
https://www.readbyqxmd.com/read/29234128/states-and-traits-of-neural-irregularity-in-the-age-varying-human-brain
#2
Leonhard Waschke, Malte Wöstmann, Jonas Obleser
Sensory representations, and thus human percepts, of the physical world are susceptible to fluctuations in brain state or "neural irregularity". Furthermore, aging brains display altered levels of neural irregularity. We here show that a single, within-trial, information-theoretic measure (weighted permutation entropy) captures neural irregularity in the human electroencephalogram as a proxy for both, trait-like differences between individuals of varying age, and state-like fluctuations that bias perceptual decisions...
December 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29229579/investigation-of-the-pulsatility-of-cerebrospinal-fluid-using-cardiac-gated-intravoxel-incoherent-motion-imaging
#3
Anton S Becker, Andreas Boss, Markus Klarhoefer, Tim Finkenstaedt, Moritz C Wurnig, Cristina Rossi
The quantitative and non-invasive monitoring of cerebrospinal fluid (CSF) dynamics and composition may have high clinical relevance in the management of CSF disorders. In this study, we propose the use of the Intravoxel Incoherent Motion (IVIM) MRI for obtaining simultaneous measurements of CSF self-diffusion and fluid circulation. The rationale for this study was that turbulent fluid and mesoscopic fluid fluctuations can be modeled in a first approximation as a fast diffusion process. In this case, we expect that the fast fluid circulation and slower molecular diffusion dynamics can be quantified, assuming a bi-exponential attenuation pattern of the diffusion-weighted signal in MRI...
December 8, 2017: NeuroImage
https://www.readbyqxmd.com/read/29215042/a-plag1-mutation-contributed-to-stature-recovery-in-modern-cattle
#4
Yuri Tani Utsunomiya, Marco Milanesi, Adam Taiti Harth Utsunomiya, Rafaela Beatriz Pintor Torrecilha, Eui-Soo Kim, Márcio Silva Costa, Tamíris Sayuri Aguiar, Steven Schroeder, Adriana Santana do Carmo, Roberto Carvalheiro, Haroldo Henrique Rezende Neves, Romulo Cláudio Morozini Padula, Thayla Souza Sussai, Ludmilla Balbo Zavarez, Rafael Silva Cipriano, Maria Margareth Theodoro Caminhas, George Hambrecht, Licia Colli, Elisa Eufemi, Paolo Ajmone-Marsan, Deneb Cesana, Marco Sannazaro, Maurizio Buora, Michele Morgante, George Liu, Derek Bickhart, Curtis Paul Van Tassell, Johann Sölkner, Tad Stewart Sonstegard, José Fernando Garcia
The recent evolution of cattle is marked by fluctuations in body size. Height in the Bos taurus lineage was reduced by a factor of ~1.5 from the Neolithic to the Middle Ages, and increased again only during the Early Modern Ages. Using haplotype analysis, we found evidence that the bovine PLAG1 mutation (Q) with major effects on body size, weight and reproduction is a >1,000 years old derived allele that increased rapidly in frequency in Northwestern European B. taurus between the 16th and 18th centuries...
December 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29214306/seven-year-weight-trajectories-and-health-outcomes-in-the-longitudinal-assessment-of-bariatric-surgery-labs-study
#5
Anita P Courcoulas, Wendy C King, Steven H Belle, Paul Berk, David R Flum, Luis Garcia, William Gourash, Mary Horlick, James E Mitchell, Alfons Pomp, Walter J Pories, Jonathan Q Purnell, Ashima Singh, Konstantinos Spaniolas, Richard Thirlby, Bruce M Wolfe, Susan Z Yanovski
Importance: More information is needed about the durability of weight loss and health improvements after bariatric surgical procedures. Objective: To examine long-term weight change and health status following Roux-en-Y gastric bypass (RYGB) and laparoscopic adjustable gastric banding (LAGB). Design, Setting, and Participants: The Longitudinal Assessment of Bariatric Surgery (LABS) study is a multicenter observational cohort study at 10 US hospitals in 6 geographically diverse clinical centers...
December 6, 2017: JAMA Surgery
https://www.readbyqxmd.com/read/29211505/the-effect-of-dietary-nitrate-on-nocturnal-sleep-disordered-breathing-and-arterial-oxygen-desaturation-at-high-altitude
#6
Alexander Patrician, Harald Engan, David Lundsten, Ludger Grote, Helena Vigetun-Haughey, Erika Schagatay
Patrician, Alexander, Harald Engan, David Lundsten, Ludger Grote, Helena Vigetun-Haughey, and Erika Schagatay. The effect of dietary nitrate on nocturnal sleep-disordered breathing and arterial oxygen desaturation at high altitude. High Alt Med Biol 00:000-000, 2017.-Sleep-disordered breathing and fluctuations in arterial oxygen saturation (SaO2) are common during sleep among lowlanders ascending to high altitude. Dietary nitrate (NO3-) supplementation has been shown to lower the O2 consumption in various conditions...
December 6, 2017: High Altitude Medicine & Biology
https://www.readbyqxmd.com/read/29210208/potential-effect-modifiers-of-the-association-between-physical-activity-patterns-and-joint-symptoms-in-middle-aged-women
#7
Geeske Peeters, Kimberley L Edwards, Wendy J Brown, Anna L Barker, Nigel Arden, Anthony C Redmond, Philip G Conaghan, Flavia Cicuttini, Gita D Mishra
OBJECTIVE: To examine whether body mass index (BMI), menopausal status and hormone therapy (HT) use modify the association between physical activity (PA) patterns throughout middle age and incidence and prevalence of joint symptoms in later middle age in women. METHODS: Data were from 6661 participants (born 1946-1951) in the Australian Longitudinal Study on Women's Health. Surveys were completed every three years from 1998 to 2010 with questions on joint pain and stiffness, PA, height and weight, menopausal symptoms, and HT use...
December 6, 2017: Arthritis Care & Research
https://www.readbyqxmd.com/read/29209071/inhaled-nicotine-equivalent-to-cigarette-smoking-disrupts-systemic-and-uterine-hemodynamics-and-induces-cardiac-arrhythmia-in-pregnant-rats
#8
Xuesi M Shao, Héctor E López-Valdés, Jing Liang, Jack L Feldman
Maternal smoking with obligatory nicotine inhalation is associated with preterm delivery, low birth weight, fetal growth retardation and developmental defects. We tested the hypothesis that cigarette smoking-relevant nicotine inhalation during pregnancy impairs cardiovascular function and uterine hemodynamics with consequential fetal ischemia. Pregnant rats exposed to episodic inhaled nicotine via a novel lung alveolar region-targeted aerosol method produced nicotine pharmacokinetics resembling cigarette smoking in humans...
December 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29195733/changes-in-body-mass-index-and-mid-upper-arm-circumference-in-relation-to-all-cause-mortality-in-older-adults
#9
Laura A Schaap, Tara Quirke, Hanneke A H Wijnhoven, Marjolein Visser
BACKGROUND & AIMS: The assessment of weight loss as an indicator of poor nutritional status in older persons is currently widely applied to establish risk of mortality. Little is known about the relationship between changes in mid-upper arm circumference (MUAC) and mortality in older individuals. The aim of the present study was to examine the association between 3-year change in MUAC and 20-year mortality in community-dwelling older adults and compare this to the association between body mass index (BMI) change and mortality...
November 15, 2017: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/29195222/pah-polycyclic-aromatic-hydrocarbon-bioaccumulation-and-pahs-shell-weight-index-in-ruditapes-philippinarum-adams-reeve-1850-from-the-vallona-lagoon-northern-adriatic-sea-ne-italy
#10
Federica Cacciatore, Valentina Bernarello, Rossella Boscolo Brusà, Giulio Sesta, Gianluca Franceschini, Chiara Maggi, Massimo Gabellini, Clauda Virno Lamberti
The Vallona lagoon is a transitional area located in the Po River delta (NE, ITALY) traditionally exploited for Manila clam (Ruditapes philippinarum) farming. During 2007-2008, a pipeline was buried in the middle of the lagoon to connect an off-shore structure to facilities on land. PAH levels were monitored in Manila clams and sediments before, during and after the pipeline construction to assess the impact of the activities through the pattern of distribution of the PAH compounds. PAH bioaccumulation in clams displayed seasonal fluctuations with higher levels in autumnal and wintry surveys than in spring-summer...
November 28, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/29192783/mesodomain-and-protein-associated-solvent-phases-with-temperature-tunable-200-265-k-dynamics-surround-ethanolamine-ammonia-lyase-in-globally-polycrystalline-aqueous-solution-containing-dimethyl-sulfoxide
#11
Benjamen Nforneh, Kurt Warncke
Electron paramagnetic resonance spectroscopy of the spin probe, TEMPOL, is used to resolve solvent phases that surround the ethanolamine ammonia-lyase (EAL) protein from Salmonella typhimurium at low temperature (T) in frozen, globally polycrystalline aqueous solution and to report on the T dependence of their detectably rigid and fluid states. EAL plays a role in human gut microbiome-based disease conditions, and physicochemical studies provide insight into protein structure and mechanism, toward potential therapeutics...
December 1, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/29192614/using-smart-devices-to-measure-intermittent-noise-in-the-workplace
#12
Benjamin Roberts, Richard Lee Neitzel
PURPOSE: To determine the accuracy of smart devices (iPods) to measure intermittent noise and integrate a noise dose in the workplace. MATERIALS AND METHODS: In experiment 1, four iPods were each paired with a Larson Davis Spark dosimeter and exposed to randomly fluctuating pink noise in a reverberant sound chamber. Descriptive statistics and the mean difference between the iPod and its paired dosimeter were calculated for the 1-s data logged measurements. The calculated time weighted average (TWA) was also compared between the devices...
March 2017: Noise & Health
https://www.readbyqxmd.com/read/29177576/variation-in-biochemical-constituents-and-master-elements-in-common-seaweeds-from-alexandria-coast-egypt-with-special-reference-to-their-antioxidant-activity-and-potential-food-uses-prospective-equations
#13
Mona M Ismail, Gehan M El Zokm, Abeer A M El-Sayed
Biochemical constituents and master elements (Pb, Cr, Cd, Fe, Cu, Zn, Hg, B, Al, SO42-, Na, K, Li, Ca, Mg, and F) were investigated in six different seaweed species from Abu Qir Bay in the Egyptian Mediterranean Sea coast. The moisture level ranged from 30.26% in Corallina mediterranea to 77.57% in Padina boryana. On dry weight basis, the ash contents varied from 25.53% in Jania rubens to 88.84% in Sargassum wightii. The protein contents fluctuated from 8.26% in S. wightii to 28.01% in J. rubens. Enteromorpha linza showed the highest lipids (4...
November 25, 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/29172239/strictly-controlled-glucose-infusion-rates-are-associated-with-a-reduced-risk-of-hyperglycaemia-in-extremely-low-birth-weight-preterm-infants
#14
Hans Jorgen Stensvold, Astri M Lang, Kenneth Strommen, Tore G Abrahamsen, Bjorn Ogland, Are H Pripp, Arild E Ronnestad
AIM: We evaluated a strict strategy that aimed to avoid fluctuations in glucose infusion rates (GIRs) and assessed the independent effects of maximal daily GIRs on the hyperglycaemia risk among extremely low birth weight (ELBW) infants receiving early enhanced parenteral nutrition. METHODS: This study comprised all ELBW infants admitted to the neonatal intensive care unit of Oslo University Hospital Rikshospitalet, Norway before (2007-2009) and after (2012-2013) implementing a strict GIR strategy...
November 24, 2017: Acta Paediatrica
https://www.readbyqxmd.com/read/29160538/are-the-effects-of-hemodialysis-on-ocular-parameters-similar-during-and-after-a-hemodialysis-session
#15
Ahmet Elbay, Muhammed Altinisik, Alper Dincyildiz, Isil Kutluturk, Julide Canan, Umurhan Akkan, Arif Koytak, Hakan Ozdemir
PURPOSE: To evaluate the changes in several ocular parameters, including choroidal thickness, during and after hemodialysis. METHODS: Twenty-seven eyes of 27 patients with chronic renal failure undergoing hemodialysis were included. The patients underwent an ophthalmic examination, including intraocular pressure, central corneal thickness, iridocorneal angle, subfoveal choroidal thickness, and blood pressure, just before a hemodialysis session, during the second hour of the session, and half an hour after the end of the session...
September 2017: Arquivos Brasileiros de Oftalmologia
https://www.readbyqxmd.com/read/29144430/a-correlation-study-of-dha-intake-estimated-by-a-ffq-and-concentrations-in-plasma-and-erythrocytes-in-mid-and-late-pregnancy
#16
Yu-Bo Zhou, Hong-Tian Li, Leonardo Trasande, Lin-Lin Wang, Ya-Li Zhang, Ke-Yi Si, Man-Xi Bai, Jian-Meng Liu
Adequate docosahexaenoic acid (DHA) is essential for the optimal growth and development of the fetus. Maternal DHA content fluctuates during pregnancy. The correlation of DHA content with dietary intake might be varied over the course of pregnancy. We aimed to compare the dietary DHA intake, estimated by a DHA-specific semiquantitative food frequency questionnaire (FFQ) against its blood content, among mid- and late-term pregnant women. A total of 804 Chinese pregnant women completed the tailored FFQ and provided fasting venous blood samples...
November 16, 2017: Nutrients
https://www.readbyqxmd.com/read/29140157/case-study-body-composition-periodization-in-an-olympic-level-female-middle-distance-runner-over-a-9-year-career
#17
Trent Stellingwerff
This case-study features an Olympic-level female middle-distance runner implementing a science-based approach to body composition periodization. Data is emerging to suggest that it is not sustainable from a health and/or performance perspective to be at peak body composition year-round, so body composition needs to be strategically periodized. Anthropometric (n=44), hematological, other health measures and 1500m race performances (n=83) were periodically assessed throughout a 9-year career. General preparation phase (September to April) featured the athlete at ~2 to 4% over ideal competition phase body weight (BW) and body fat (%) with optimal energy availability being prioritized...
November 15, 2017: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/29136641/radioactive-contamination-in-the-tokyo-metropolitan-area-in-the-early-stage-of-the-fukushima-daiichi-nuclear-power-plant-fdnpp-accident-and-its-fluctuation-over-five-years
#18
Masanobu Ishida, Hideo Yamazaki
Radioactive contamination in the Tokyo metropolitan area in the immediate aftermath of the Fukushima Daiichi Nuclear Power Plant (FDNPP) accident was analyzed via surface soil sampled during a two-month period after the accident. 131I, 134Cs, and 137Cs were detected in these soil samples. The activity and inventory of radioactive material in the eastern part of Tokyo tended to be high. The 134Cs/137Cs activity ratio in soil was 0.978 ± 0.053. The 131I/137Cs ratio fluctuated widely, and was 19.7 ± 9.0 (weighted average 18...
2017: PloS One
https://www.readbyqxmd.com/read/29128581/trends-in-resource-utilization-and-rate-of-cervical-disc-arthroplasty-and-anterior-cervical-discectomy-and-fusion-throughout-the-united-states-from-2006-to-2013
#19
Comron Saifi, Arielle Fein, Alejandro Cazzulino, Ronald Lehman, Frank M Phillips, Howard S An, K Daniel Riew
BACKGROUND CONTEXT: The typically accepted surgical procedure for cervical disc pathology has been the anterior cervical discectomy and fusion (ACDF), although recent trials have demonstrated equivalent or improved outcomes with cervical disc arthroplasty (CDA). Trends for these two procedures regarding utilization, revision procedures, along with other demographic information have not been sufficiently explored. PURPOSE: To provide data regarding ACDF and CDA from 2006-2013 in the U...
November 8, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/29123681/lifetimes-and-spatio-temporal-response-of-protein-crystals-in-intense-x-ray-microbeams
#20
Matthew A Warkentin, Hakan Atakisi, Jesse B Hopkins, Donald Walko, Robert E Thorne
Serial synchrotron-based crystallography using intense microfocused X-ray beams, fast-framing detectors and protein microcrystals held at 300 K promises to expand the range of accessible structural targets and to increase overall structure-pipeline throughputs. To explore the nature and consequences of X-ray radiation damage under microbeam illumination, the time-, dose- and temperature-dependent evolution of crystal diffraction have been measured with maximum dose rates of 50 MGy s(-1). At all temperatures and dose rates, the integrated diffraction intensity for a fixed crystal orientation shows non-exponential decays with dose...
November 1, 2017: IUCrJ
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