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https://www.readbyqxmd.com/read/28734164/cognitive-strategies-in-the-mental-rotation-task-revealed-by-eeg-spectral-power
#1
Aaron L Gardony, Marianna D Eddy, Tad T Brunyé, Holly A Taylor
The classic mental rotation task (MRT; Shepard & Metzler, 1971) is commonly thought to measure mental rotation, a cognitive process involving covert simulation of motor rotation. Yet much research suggests that the MRT recruits both motor simulation and other analytic cognitive strategies that depend on visuospatial representation and visual working memory (WM). In the present study, we investigated cognitive strategies in the MRT using time-frequency analysis of EEG and independent component analysis. We scrutinized sensorimotor mu (µ) power reduction, associated with motor simulation, parietal alpha (pα) power reduction, associated with visuospatial representation, and frontal midline theta (fmθ) power enhancement, associated with WM maintenance and manipulation...
July 19, 2017: Brain and Cognition
https://www.readbyqxmd.com/read/28731652/assessment-of-self-perception-of-physical-fitness-and-proposal-for-standards-among-chilean-adolescent-students-the-eapaf-study
#2
Marco Cossio-Bolaños, Pablo Vasquez, Cristian Luarte-Rocha, José Sulla-Torres, Rossana Gómez Campos
INTRODUCTION: Physical fitness may be assessed among children and adolescents in a quantitative and qualitative manner. At present, in Chile, there are no tools available to assess self-perception of physical fitness. Therefore, the purpose of this study was to develop a valid and reliable instrument that would allow to assess selfperception of physical fitness among adolescents and propose standards for age and sex. MATERIALS AND METHODS: A survey was administered among adolescent students from six public schools in the Maule Region, Chile, selected in a probabilistic (stratified) fashion...
August 1, 2017: Archivos Argentinos de Pediatría
https://www.readbyqxmd.com/read/28727713/local-brain-activity-differences-between-herpes-zoster-and-postherpetic-neuralgia-patients-a-resting-state-functional-mri-study
#3
Song Cao, Ying Li, Wenwen Deng, Bangyong Qin, Yi Zhang, Peng Xie, Jie Yuan, Buwei Yu, Tian Yu
BACKGROUND: Herpes zoster (HZ) can develop into postherpetic neuralgia (PHN), both of which are painful diseases. PHN patients suffer chronic pain and emotional disorders. Previous studies showed that the PHN brain displayed abnormal activity and structural change, but the difference in brain activity between HZ and PHN is still not known. OBJECTIVES: To identify regional brain activity changes in HZ and PHN brains with resting-state functional magnetic resonance imaging (rs-fMRI) technique, and to observe the differences between HZ and PHN patients...
July 2017: Pain Physician
https://www.readbyqxmd.com/read/28726438/superior-pattern-detectors-efficiently-learn-activate-apply-and-update-social-stereotypes
#4
David J Lick, Adam L Alter, Jonathan B Freeman
Superior cognitive abilities are generally associated with positive outcomes such as academic achievement and social mobility. Here, we explore the darker side of cognitive ability, highlighting robust links between pattern detection and stereotyping. Across 6 studies, we find that superior pattern detectors efficiently learn and use stereotypes about social groups. This pattern holds across explicit (Studies 1 and 2), implicit (Studies 2 and 4), and behavioral measures of stereotyping (Study 3). We also find that superior pattern detectors readily update their stereotypes when confronted with new information (Study 5), making them particularly susceptible to counterstereotype training (Study 6)...
July 20, 2017: Journal of Experimental Psychology. General
https://www.readbyqxmd.com/read/28721621/tolerance-of-japanese-knotweed-s-l-to-soil-artificial-polymetallic-pollution-early-metabolic-responses-and-performance-during-vegetative-multiplication
#5
Serge Michalet, Soraya Rouifed, Thomas Pellassa-Simon, Manon Fusade-Boyer, Guillaume Meiffren, Sylvie Nazaret, Florence Piola
The expansion of invasive Japanese knotweed s.l. is of particular concern because of its aptitudes to rapidly colonize diverse environments, especially anthropized habitats generally characterized by their pollution with heavy metals. Whether the presence of heavy metals impacts the performance traits of this plant is a central question to better understand its invasive properties, though no controlled approach to assess these effects was yet reported. In this aim, we undertook greenhouse experiments where rhizome fragments of Japanese knotweed s...
July 18, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28702788/how-do-physicians-become-medical-experts-a-test-of-three-competing-theories-distinct-domains-independent-influence-and-encapsulation-models
#6
Claudio Violato, Hong Gao, Mary Claire O'Brien, David Grier, E Shen
The distinction between basic sciences and clinical knowledge which has led to a theoretical debate on how medical expertise is developed has implications for medical school and lifelong medical education. This longitudinal, population based observational study was conducted to test the fit of three theories-knowledge encapsulation, independent influence, distinct domains-of the development of medical expertise employing structural equation modelling. Data were collected from 548 physicians (292 men-53.3%; 256 women-46...
July 12, 2017: Advances in Health Sciences Education: Theory and Practice
https://www.readbyqxmd.com/read/28701488/comparative-biomechanical-behavior-and-healing-profile-of-a-novel-thinned-wall-ultrahigh-molecular-weight-amorphous-poly-l-lactic-acid-sirolimus-eluting-bioresorbable-coronary-scaffold
#7
Yanping Cheng, Pawel Gasior, Jing-Gang Xia, Kamal Ramzipoor, Chang Lee, Edward A Estrada, Daniell Dokko, Jenn C McGregor, Gerard B Conditt, Thomas McAndrew, Greg L Kaluza, Juan F Granada
BACKGROUND: Mechanical strength of bioresorbable scaffolds (BRS) is highly dependent on strut dimensions and polymer features. To date, the successful development of thin-walled BRS has been challenging. We compared the biomechanical behavior and vascular healing profile of a novel thin-walled (115 µm) sirolimus-eluting ultrahigh molecular weight amorphous poly-l-lactic acid-based BRS (APTITUDE, Amaranth Medical [AMA]) to Absorb (bioresorbable vascular scaffold [BVS]) using different experimental models...
July 2017: Circulation. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28700512/influence-of-morphology-and-strength-on-front-crawl-swimming-speed-in-junior-and-youth-age-group-swimmers
#8
Marek Strzała, Arkadiusz Stanula, Piotr Krężałek, Andrzej Ostrowski, Marcin Kaca, Grzegorz Głąb
OBJECTIVES: this study, conducted in two male age groups, was aimed at analysing the influence of body properties, dry-land strength and swimming strength on 50 m crawl (VCrawl). METHODS: We examined two competitive groups, Youth (20.6 ± 1.05), and Junior, (17.3 ± 0.59), through: a. (lean) body mass (BM and LBM), (total) body height (BH and TBL) and arm span (AS); b. counter movement jump (CMJ) and maximum isometric strength of elbow and knee joints; c. tethered crawl strength...
July 8, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28692903/specialty-satisfaction-positive-psychological-capital-and-nursing-professional-values-in-nursing-students-a-cross-sectional-survey
#9
Chung Hee Woo, Ju Young Park
BACKGROUND: Ideally, college majors should be chosen to achieve self-realization and correspond to self-concept. However, some students select a major based on extrinsic factors, rather than aptitude or interests, because of a lack of employment opportunities. If they have negative college experiences with an unsatisfactory major, they might not engage fully in their occupation following graduation. OBJECTIVE: This study aimed to identify factors affecting specialty satisfaction in preclinical practice nursing-college students...
June 24, 2017: Nurse Education Today
https://www.readbyqxmd.com/read/28658471/association-between-medication-use-and-performance-on-higher-education-entrance-tests-in-individuals-with-attention-deficit-hyperactivity-disorder
#10
Yi Lu, Arvid Sjölander, Martin Cederlöf, Brian M D'Onofrio, Catarina Almqvist, Henrik Larsson, Paul Lichtenstein
Importance: Individuals with attention-deficit/hyperactivity disorder (ADHD) are at greater risk for academic problems. Pharmacologic treatment is effective in reducing the core symptoms of ADHD, but it is unclear whether it helps to improve academic outcomes. Objective: To investigate the association between the use of ADHD medication and performance on higher education entrance tests in individuals with ADHD. Design, Setting, and Participants: This cohort study observed 61 640 individuals with a diagnosis of ADHD from January 1, 2006, to December 31, 2013...
June 28, 2017: JAMA Psychiatry
https://www.readbyqxmd.com/read/28656856/student-life-handling-negative-feedback
#11
Mandy Day-Calder
It is worth spending time reflecting on the expectations you set for yourself. Hopefully, your aim is to be the best nurse you can be, but there is a reason that your course is the length it is; the skills and aptitude needed to become a proficient nurse take time to master.
June 28, 2017: Nursing Standard
https://www.readbyqxmd.com/read/28654268/electroactive-and-high-dielectric-folic-acid-pvdf-composite-film-rooted-simplistic-organic-photovoltaic-self-charging-energy-storage-cell-with-superior-energy-density-and-storage-capability
#12
Swagata Roy, Pradip Thakur, Nur Amin Hoque, Biswajoy Bagchi, Nayim Sepay, Farha Khatun, Arpan Kool, Sukhen Das
Herein we report a simplistic prototype approach to develop an organic photovoltaic self-charging energy storage cell (OPSESC) rooted with biopolymer folic acid (FA) modified high dielectric and electroactive β crystal enriched poly(vinylidene fluoride) (PVDF) composite (PFA) thin film. Comprehensive and exhaustive characterizations of the synthesized PFA composite films validate the proper formation of β-polymorphs in PVDF. Significant improvements of both β-phase crystallization (F(β) ≈ 71.4%) and dielectric constant (ε ≈ 218 at 20 Hz for PFA of 7...
July 19, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28651053/hexafluorophosphate-based-solutions-for-mg-batteries-and-the-importance-of-chlorides
#13
Ivgeni Shterenberg, Michael Salama, Yosef Gofer, Doron Aurbach
The selection of viable conventional magnesium salts in electrolyte solutions for Mg secondary batteries is very limited. Reversible magnesium deposition was only demonstrated with MgTFSI2, in ethereal solutions. A recent report has suggested that Mg can be reversibly deposited from a solution of Mg(PF6)2 in THF and acetonitrile. In this paper, we dispute that claim and show that PF6(-) anions passivate Mg anodes and completely inhibit any Mg deposition/dissolution process. We show that addition of chlorides suppresses the passivation phenomena and allows for reversible Mg deposition/dissolution processes to commence...
June 26, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28650884/can-surgeon-demographic-factors-predict-postoperative-complication-rates-after-elective-spinal-fusion
#14
Danielle S Chun, Ralph W Cook, Joseph A Weiner, Michael S Schallmo, Kathryn A Barth, Sameer K Singh, Ryan D Freshman, Alpesh A Patel, Wellington K Hsu
STUDY DESIGN: Retrospective cohort. OBJECTIVE: Determine whether surgeon demographic factors influence postoperative complication rates after elective spine fusion procedures. BACKGROUND: Surgeon demographic factors have been shown to impact decision making in the management of degenerative disease of the lumbar spine. Complication rates are frequently reported outcome measurements used to evaluate surgical treatments, quality-of-care, and determine health care reimbursements...
June 23, 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28649865/dental-stem-cells-recent-progresses-in-tissue-engineering-and-regenerative-medicine
#15
João Botelho, Maria Alzira Cavacas, Vanessa Machado, José João Mendes
Since the disclosure of adult mesenchymal stem cells (MSCs) there have been an intense investigation on the characteristics of these cells and their potentialities. Dental Stem Cells (DSCs) are MSC-like populations with self-renewal capacity and multidifferentiation potential. Currently, there are five main DSCs, dental pulp stem cells (DPSCs), stem cells from exfoliated deciduous teeth (SHED), stem cells from apical papilla (SCAP), periodontal ligament stem cells (PDLSCs), and Dental Follicle Precursor Cells (DFPCs)...
June 24, 2017: Annals of Medicine
https://www.readbyqxmd.com/read/28632057/rotation-sequence-to-report-humerothoracic-kinematics-during-3d-motion-involving-large-horizontal-component-application-to-the-tennis-forehand-drive
#16
Thomas Creveaux, Violaine Sevrez, Raphaël Dumas, Laurence Chèze, Isabelle Rogowski
The aim of this study was to examine the respective aptitudes of three rotation sequences (YtXf'Yh'', ZtXf'Yh'', and XtZf'Yh'') to effectively describe the orientation of the humerus relative to the thorax during a movement involving a large horizontal abduction/adduction component: the tennis forehand drive. An optoelectronic system was used to record the movements of eight elite male players, each performing ten forehand drives. The occurrences of gimbal lock, phase angle discontinuity and incoherency in the time course of the three angles defining humerothoracic rotation were examined for each rotation sequence...
February 28, 2017: Sports Biomechanics
https://www.readbyqxmd.com/read/28624230/the-correlation-between-fundamental-characteristics-and-first-time-performance-in-laparoscopic-tasks
#17
Cuan M Harrington, Richard Bresler, Donncha Ryan, Patrick Dicker, Oscar Traynor, Dara O Kavanagh
BACKGROUND: The ability of characteristics to predict first time performance in laparoscopic tasks is not well described. Videogame experience predicts positive performance in laparoscopic experiences but its mechanism and confounding-association with aptitude remains to be elucidated. This study sought to evaluate for innate predictors of laparoscopic performance in surgically naive individuals with minimal videogame exposure. METHODS: Participants with no prior laparoscopic exposure and minimal videogaming experience were recruited consecutively from preclinical years at a medical university...
June 8, 2017: American Journal of Surgery
https://www.readbyqxmd.com/read/28624216/gold-nanoparticles-for-bcr-abl1-gene-silencing-improving-tyrosine-kinase-inhibitor-efficacy-in-chronic-myeloid-leukemia
#18
Raquel Vinhas, Alexandra R Fernandes, Pedro V Baptista
Introduction of tyrosine kinase inhibitors for chronic myeloid leukemia treatment is associated with a 63% probability of maintaining a complete cytogenetic response, meaning that over 30% patients require an alternative methodology to overcome resistance, tolerance, or side effects. Considering the potential of nanotechnology in cancer treatment and the benefits of a combined therapy with imatinib, a nanoconjugate was designed to achieve BCR-ABL1 gene silencing. Gold nanoparticles were functionalized with a single-stranded DNA oligonucleotide that selectively targets the e14a2 BCR-ABL1 transcript expressed by K562 cells...
June 16, 2017: Molecular Therapy. Nucleic Acids
https://www.readbyqxmd.com/read/28615084/community-wide-stable-isotope-analysis-reveals-two-distinct-trophic-groups-in-a-service-providing-carabid-community
#19
S Kamenova, C Leroux, S E Polin, M Plantegenest
Disentangling trophic interactions among species is important for elucidating mechanisms underlying ecosystem functioning and services. Carabid beetles are an important guild of predators that may regulate pest populations in arable landscapes, but their generalist feeding behavior hinders predictions about their actual contribution to pest control. In order to assess carabids' potential for pest control, we simultaneously analyzed the carbon and nitrogen stable isotope ratios of a community of 45 co-occurring species in wheat and oilseed rape fields...
June 15, 2017: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/28614293/histone-deacetylase-3-prepares-brown-adipose-tissue-for-acute-thermogenic-challenge
#20
Matthew J Emmett, Hee-Woong Lim, Jennifer Jager, Hannah J Richter, Marine Adlanmerini, Lindsey C Peed, Erika R Briggs, David J Steger, Tao Ma, Carrie A Sims, Joseph A Baur, Liming Pei, Kyoung-Jae Won, Patrick Seale, Zachary Gerhart-Hines, Mitchell A Lazar
Brown adipose tissue is a thermogenic organ that dissipates chemical energy as heat to protect animals against hypothermia and to counteract metabolic disease. However, the transcriptional mechanisms that determine the thermogenic capacity of brown adipose tissue before environmental cold are unknown. Here we show that histone deacetylase 3 (HDAC3) is required to activate brown adipose tissue enhancers to ensure thermogenic aptitude. Mice with brown adipose tissue-specific genetic ablation of HDAC3 become severely hypothermic and succumb to acute cold exposure...
June 22, 2017: Nature
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