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https://www.readbyqxmd.com/read/28634448/from-behavioral-facilitation-to-inhibition-the-neuronal-correlates-of-the-orienting-and-reorienting-of-auditory-attention
#1
Faith M Hanlon, Andrew B Dodd, Josef M Ling, Juan R Bustillo, Christopher C Abbott, Andrew R Mayer
Successful adaptive behavior relies on the ability to automatically (bottom-up) orient attention to different locations in the environment. This results in a biphasic pattern in which reaction times (RT) are faster for stimuli that occur in the same spatial location (valid) for the first few hundred milliseconds, which is termed facilitation. This is followed by faster RT for stimuli that appear in novel locations (invalid) after longer delays, termed inhibition of return. The neuronal areas and networks involved in the transition between states of facilitation and inhibition remain poorly understood, especially for auditory stimuli...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28633291/p2x7-receptors-drive-spine-synapse-plasticity-in-the-learned-helplessness-model-of-depression
#2
L Otrokocsi, Á Kittel, B Sperlágh
Background: Major depressive disorder is characterized by structural and functional abnormalities of cortical and limbic brain areas, including a decrease in spine synapse number in the dentate gyrus (DG) of the hippocampus. Recent studies highlighted that both genetic and pharmacological invalidation of the purinergic P2X7 receptor (P2rx7) leads to antidepressant-like phenotype in animal experiments, however, the impact of P2rx7 on depression-related structural changes in the hippocampus is not clarified yet...
June 13, 2017: International Journal of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28632025/use-of-latent-class-analysis-to-define-groups-based-on-validity-cognition-and-emotional-functioning
#3
Ruth T Morin, Bradley N Axelrod
OBJECTIVE: Latent Class Analysis (LCA) was used to classify a heterogeneous sample of neuropsychology data. In particular, we used measures of performance validity, symptom validity, cognition, and emotional functioning to assess and describe latent groups of functioning in these areas. METHOD: A data-set of 680 neuropsychological evaluation protocols was analyzed using a LCA. Data were collected from evaluations performed for clinical purposes at an urban medical center...
June 15, 2017: Clinical Neuropsychologist
https://www.readbyqxmd.com/read/28630353/evaluation-of-a-proposal-for-reliable-low-cost-grid-power-with-100-wind-water-and-solar
#4
Christopher T M Clack, Staffan A Qvist, Jay Apt, Morgan Bazilian, Adam R Brandt, Ken Caldeira, Steven J Davis, Victor Diakov, Mark A Handschy, Paul D H Hines, Paulina Jaramillo, Daniel M Kammen, Jane C S Long, M Granger Morgan, Adam Reed, Varun Sivaram, James Sweeney, George R Tynan, David G Victor, John P Weyant, Jay F Whitacre
A number of analyses, meta-analyses, and assessments, including those performed by the Intergovernmental Panel on Climate Change, the National Oceanic and Atmospheric Administration, the National Renewable Energy Laboratory, and the International Energy Agency, have concluded that deployment of a diverse portfolio of clean energy technologies makes a transition to a low-carbon-emission energy system both more feasible and less costly than other pathways. In contrast, Jacobson et al. [Jacobson MZ, Delucchi MA, Cameron MA, Frew BA (2015) Proc Natl Acad Sci USA 112(49):15060-15065] argue that it is feasible to provide "low-cost solutions to the grid reliability problem with 100% penetration of WWS [wind, water and solar power] across all energy sectors in the continental United States between 2050 and 2055", with only electricity and hydrogen as energy carriers...
June 19, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28628162/-distant-metastases-of-malignant-salivary-gland-carcinoma-after-treated-by-125-i
#5
(no author information available yet)
OBJECTIVE: To investigate clinical features of distant metastases from malignant salivary gland carcinomas after treated by (125)I internal brachy therapy alone. METHODS: Between 2002 and 2010, 43 patients with locally advanced unresectable or recurrent malignant salivary gland carcinomas were treated by (125)I internal brachy therapy alone at Peking University School and Hospital of Stomatology. All of them had been follow-up at least 2 years. The primary sites of malignant salivary gland carcinomas were the parotid for 12 patients, infratemporal fossa for 9 patients, tongue for 7 patients, maxilla for 6 patients, parapharyngeal for 4 patients, floor of months for 3 patients, submandibular gland for 1 patient, and lip for 1 patient...
June 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28621715/neuropsychiatric-burden-in-huntington-s-disease
#6
REVIEW
Ricardo Augusto Paoli, Andrea Botturi, Andrea Ciammola, Vincenzo Silani, Cecilia Prunas, Claudio Lucchiari, Elisa Zugno, Elisabetta Caletti
Huntington's disease is a disorder that results in motor, cognitive, and psychiatric problems. The symptoms often take different forms and the presence of disturbances of the psychic sphere reduces patients' autonomy and quality of life, also impacting patients' social life. It is estimated that a prevalence between 33% and 76% of the main psychiatric syndromes may arise in different phases of the disease, often in atypical form, even 20 years before the onset of chorea and dementia. We present a narrative review of the literature describing the main psychopathological patterns that may be found in Huntington's disease, searching for a related article in the main database sources (Medline, ISI Web of Knowledge, Scopus, and Medscape)...
June 16, 2017: Brain Sciences
https://www.readbyqxmd.com/read/28619425/using-endogenous-saccades-to-characterize-fatigue-in-multiple-sclerosis
#7
Marisa Ferreira, Paulo A Pereira, Marta Parreira, Inês Sousa, José Figueiredo, João J Cerqueira, Antonio F Macedo
PURPOSE: Multiple Sclerosis (MS) is likely to cause dysfunction of neural circuits between brain regions increasing brain working load or a subjective overestimation of such working load leading to fatigue symptoms. The aim of this study was to investigate if saccades can reveal the effect of fatigue in patients with MS. METHODS: Patients diagnosed with MS (EDSS<=3) and age matched controls were recruited. Eye movements were monitored using an infrared eyetracker...
May 2017: Multiple Sclerosis and related Disorders
https://www.readbyqxmd.com/read/28614285/invalid-comparison-between-methods-of-epiphysiodesis
#8
Peter M Stevens
No abstract text is available yet for this article.
June 13, 2017: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/28610128/review-of-i-pennella-i-oken-1816-copepoda-pennellidae-with-a-description-of-i-pennella-i-i-benzi-i-sp-nov-a-parasite-of-escolar-i-lepidocybium-i-i-flavobrunneum-i-pisces-in-the-northwest-atlantic-ocean
#9
W E Hogans
The genus Pennella Oken, 1816, mesoparasitic copepods from marine fish and mammals, is reviewed with the objective of determining the validity of members of the genus. Details of the external morphological structures of the adult female are presented. Pennella species are differentiated based on a combination of characters: the type of host parasitized, overall length of the parasite, shape, size and configuration of cephalothoracic papillae, segmentation of the first and second antenna, holdfast horn number, shape and configuration, and structure of the abdominal plumes...
March 17, 2017: Zootaxa
https://www.readbyqxmd.com/read/28609939/additions-to-the-hydroids-cnidaria-hydrozoa-of-the-bay-of-fundy-northeastern-north-america-with-a-checklist-of-species-reported-from-the-region
#10
Dale R Calder
Two new species of hydroids, Eudendrium bleakneyi and Halecium praeparvum, are described from the Bay of Fundy. Fourteen others, Tubularia acadiae Petersen, 1990, Coryne pusilla Gaertner, 1774, Sarsia lovenii (M. Sars, 1846), Zanclea implexa (Alder, 1856), Corydendrium dispar Kramp, 1935, Rhizogeton fusiformis L. Agassiz, 1862, Bougainvillia muscus (Allman, 1863), Rhizorhagium roseum M. Sars, in G.O. Sars, 1874, Hydractinia symbiolongicarpus Buss & Yund, 1989, Eudendrium vaginatum Allman, 1863, Tiaropsis multicirrata (M...
April 24, 2017: Zootaxa
https://www.readbyqxmd.com/read/28605640/linking-primary-study-data-with-administrative-and-claims-data-in-a-german-cohort-study-on-work-age-health-and-work-participation-is-there-a-consent-bias
#11
C Stallmann, E Swart, B-P Robra, S March
OBJECTIVES: We analysed the degree and impact of consent bias in the prospective study 'leben in der Arbeit (lidA)' after linking primary interview data with claims data from German statutory health insurance funds as well as with administrative data provided by the German Federal Employment Agency. STUDY DESIGN: Prospective cohort study. METHODS: Within two study waves (2011, 2014) primary data were collected based on computer-assisted personal interviews...
June 9, 2017: Public Health
https://www.readbyqxmd.com/read/28604709/two-dimensional-non-volatile-programmable-p-n-junctions
#12
Dong Li, Mingyuan Chen, Zhengzong Sun, Peng Yu, Zheng Liu, Pulickel M Ajayan, Zengxing Zhang
Semiconductor p-n junctions are the elementary building blocks of most electronic and optoelectronic devices. The need for their miniaturization has fuelled the rapid growth of interest in two-dimensional (2D) materials. However, the performance of a p-n junction considerably degrades as its thickness approaches a few nanometres and traditional technologies, such as doping and implantation, become invalid at the nanoscale. Here we report stable non-volatile programmable p-n junctions fabricated from the vertically stacked all-2D semiconductor/insulator/metal layers (WSe2/hexagonal boron nitride/graphene) in a semifloating gate field-effect transistor configuration...
June 12, 2017: Nature Nanotechnology
https://www.readbyqxmd.com/read/28599818/dealing-with-uncertainty-when-using-a-surveillance-system
#13
Gaëtan Texier, Liliane Pellegrin, Claire Vignal, Jean-Baptiste Meynard, Xavier Deparis, Hervé Chaudet
INTRODUCTION: Epidemiologists manage outbreak identification and confirmation by means of a "situation diagnosis", which involves validating (or invalidating) an alarm (signal identified as abnormal) as an alert (a real, characterized outbreak) and proposing the first countermeasures. This work investigates how uncertainty is materialized during this stage, and how experts develop strategies to address this uncertainty with the help of an early warning system. METHODS: We built an experiment using a simulation platform with a scenario involving both a natural and an intentional outbreak...
August 2017: International Journal of Medical Informatics
https://www.readbyqxmd.com/read/28596939/undifferentiated-pleomorphic-sarcoma-and-the-importance-of-considering-the-oncogenic-and-immune-suppressant-role-of-the-human-t-cell-lymphotropic-virus-type-1-a-case-report
#14
Sergio Lupo, Carolina Berini, Camila Cánepa, Eduardo Santini Araujo, Mirna Biglione
INTRODUCTION: Soft-tissue sarcomas account for 0.7% of all malignant tumors, with an incidence rate of 3 per 100,000 persons/year. The undifferentiated pleomorphic sarcoma (UPS) with giant cells, a high grade tumor of soft tissue, is very unusual, especially in young adults before the age of 40. Human T-cell lymphotropic virus type 1 (HTLV-1) is a human retrovirus, classified as group 1 human carcinogens by The International Agency for Research on Cancer, that causes an aggressive malignancy known as adult T-cell lymphoma/leukemia and a progressive chronic inflammatory neurological disease named HTLV-1-associated myelopathy/tropical spastic paraparesis (HAM/TSP)...
2017: Frontiers in Oncology
https://www.readbyqxmd.com/read/28593892/neonatal-hypoglycemia-risk-factors-and-outcomes
#15
Orhideja Stomnaroska, Elizabeta Petkovska, Snezana Jancevska, Dragan Danilovski
BACKGROUND AND AIMS: Severe neonatal hypoglycemia (HG) leads to neurologic damage, mental retardation, epilepsy, personality disorders, impaired cardiac performance and muscle weakness. We aimed to assess the clinical characteristics of children with hypoglycemia in a random population of newborns. PATIENTS, METHODS AND RESULTS: We investigated 84 patients (M:F=35:48) born at the University Clinic for Gynecology and Obstetrics in Skopje (hospitalized in the NICU) who were found to have hypoglycemia...
March 1, 2017: Prilozi (Makedonska Akademija Na Naukite i Umetnostite. Oddelenie za Medicinski Nauki)
https://www.readbyqxmd.com/read/28592863/human-cortical-activity-evoked-by-contextual-processing-in-attentional-orienting
#16
Shuo Zhao, Chunlin Li, Shota Uono, Sayaka Yoshimura, Motomi Toichi
The ability to assess another person's direction of attention is paramount in social communication, many studies have reported a similar pattern between gaze and arrow cues in attention orienting. Neuroimaging research has also demonstrated no qualitative differences in attention to gaze and arrow cues. However, these studies were implemented under simple experiment conditions. Researchers have highlighted the importance of contextual processing (i.e., the semantic congruence between cue and target) in attentional orienting, showing that attentional orienting by social gaze or arrow cues could be modulated through contextual processing...
June 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28589837/description-of-a-new-quadrigyrid-acanthocephalan-from-kashmir-with-notes-on-metal-analysis-and-histopathology-and-a-key-to-species-of-the-subgenus-acanthosentis-from-the-indian-subcontinent
#17
Omar M Amin, Richard A Heckmann, Ummer Rashid Zargar
Acanthogyrus (Acanthosentis) kashmirensis n. sp. is described from recently collected acanthocephalan specimens in the Jhelum River in northern Kashmir that are conspecific with Neoechinorhynchus kashmirensis Fotedar & Dhar, 1977 originally described in an unpublished Ph.D. thesis in 1972 from 4 species of cyprinid fishes, Tor tor Hamilton, Bangana diplostoma (Heckel) [syn. Labeo diplostoma Heckel] , Labeo rohita Hamilton and Ptychobarbus sp. Steindachner. The poor unpublished diagnosis was followed by one uninformative abstract in a scientific meeting in 1977...
June 7, 2017: Journal of Parasitology
https://www.readbyqxmd.com/read/28589425/comparison-of-the-immuview-and-the-binaxnow-antigen-tests-in-detection-of-streptococcus-pneumoniae-and-legionella-pneumophila-in-urine
#18
S Athlin, A Iversen, V Özenci
The use of urinary antigen tests (UATs) may provide early etiology in pneumonia, and facilitates rapid and directed antibiotic treatment. In this study, we evaluated the novel lateral flow ImmuView Streptococcus pneumoniae and Legionella pneumophila UAT, which detects pneumococcal and L. pneumophila serogroup 1 antigens in a combined test. We compared the ImmuView UAT with the BinaxNOW S. pneumoniae UAT and the BinaxNOW L. pneumophila UAT in 147 patients with pneumococcal bacteremia (n = 48), non-pneumococcal non-Legionella bacteremia (n = 93) and Legionella infections in the lower airways (L...
June 6, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28581777/power-spectrum-of-long-eigenlevel-sequences-in-quantum-chaotic-systems
#19
Roman Riser, Vladimir Al Osipov, Eugene Kanzieper
We present a nonperturbative analysis of the power spectrum of energy level fluctuations in fully chaotic quantum structures. Focusing on systems with broken time-reversal symmetry, we employ a finite-N random matrix theory to derive an exact multidimensional integral representation of the power spectrum. The N→∞ limit of the exact solution furnishes the main result of this study-a universal, parameter-free prediction for the power spectrum expressed in terms of a fifth Painlevé transcendent. Extensive numerics lends further support to our theory which, as discussed at length, invalidates a traditional assumption that the power spectrum is merely determined by the spectral form factor of a quantum system...
May 19, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28580122/insights-into-the-excitonic-processes-in-polymeric-photocatalysts
#20
Hui Wang, Shenlong Jiang, Shichuan Chen, Xiaodong Zhang, Wei Shao, Xianshun Sun, Zhi Zhao, Qun Zhang, Yi Luo, Yi Xie
Understanding the photoexcitation processes in semiconductors is critical for the design of advanced photocatalytic materials. Nevertheless, traditional viewpoints focus on photogenerated free charge carriers, which are somehow invalid once the many-body effects are taken into account, especially for polymeric photocatalysts. Here we systematically investigate the photoexcitation processes involved in the polymer matrix of graphitic carbon nitride (g-C3N4) by combining photoluminescence spectroscopy and ultrafast transient absorption spectroscopy, validating the strong excitonic effects in the well-known photocatalyst for the first time...
May 1, 2017: Chemical Science
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