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https://www.readbyqxmd.com/read/29222993/supplementation-of-gamma-aminobutyric-acid-gaba-affects-temporal-but-not-spatial-visual-attention
#1
Anna Leonte, Lorenza S Colzato, Laura Steenbergen, Bernhard Hommel, Elkan G Akyürek
In a randomized, double-blind, and placebo-controlled experiment, the acute effects of gamma-aminobutyric acid (GABA) supplementation on temporal and spatial attention in young healthy adults were investigated. A hybrid two-target rapid serial visual presentation task was used to measure temporal attention and integration. Additionally, a visual search task was used to measure the speed and accuracy of spatial attention. While temporal attention depends primarily on the distribution of limited attentional resources across time, spatial attention represents the engagement and disengagement by relevant and irrelevant stimuli across the visual field...
December 6, 2017: Brain and Cognition
https://www.readbyqxmd.com/read/29222983/the-action-is-in-the-task-set-not-in-the-action
#2
Maria M Robinson, John Clevenger, David E Irwin
In 7 experiments we contrasted two accounts for novel sources of attentional bias. According to the action-based account, executing a motor response towards an object causes people to allocate attention preferentially towards properties of that object in a subsequent task even when properties of the acted-on object are task irrelevant. This remarkable view entails that motor processing is in itself sufficient to affect later attentional processing, in the absence of stimulus evaluation and motor preparation...
December 6, 2017: Cognitive Psychology
https://www.readbyqxmd.com/read/29222955/brain-comorbidities-in-normal-pressure-hydrocephalus
#3
Gilles Allali, Magali Laidet, Stéphane Armand, Frédéric Assal
BACKGROUND: This cross-sectional study aims to compare gait changes after CSF tap test between normal pressure hydrocephalus patients with and without brain comorbidities (respectively NPH+ and NPH); and then identify significant contributors to poor CSF tap test among individuals with NPH+. METHODS: Gait changes (during single and dual task of backward counting) were quantified before and 24 hours after CSF tap test with an optoelectronic system in 52 NPH patients (77...
December 9, 2017: European Journal of Neurology: the Official Journal of the European Federation of Neurological Societies
https://www.readbyqxmd.com/read/29222912/bringing-the-disabled-body-to-personality-psychology-a-case-study-of-samantha
#4
Jonathan M Adler
OBJECTIVE: Personality psychology has largely ignored the experiences of people with disabilities. This paper strives to bring the thriving, interdisciplinary field of disability studies to personality psychology via a case study of Samantha (N=1). Samantha feels that she grew up as a hearing person who could not hear and is now a deaf person who can hear. METHOD: Narrative identity provides the theoretical, methodological, and analytical framework for the rich, qualitative examination of Samantha's life story, interwoven with approaches from disability studies and intersectionality theory...
December 9, 2017: Journal of Personality
https://www.readbyqxmd.com/read/29222870/a-route-to-base-coordinate-silicon-difluoride-and-the-silicon-trifluoride-radical
#5
Herbert W Roesky, Soumen Sinhababu, Subrata Kundu, Alexander Paesch, Regine Herbst-Irmer, Dietmar Stalke, Israel Fernández, Gernot Frenking, Claudia Stückl, Brigitte Schwederski, Wolfgang Kaim
Silicon difluoride (SiF2) is highly unstable at room temperature and condenses at this temperature rapidly to a polymeric material of unknown structure. Therefore the isolation of a stable monomeric silicon difluoride species is a challenging task. The cyclic alkyl(amino) carbene (cAAC) coordinated silicon difluoride was isolated as (cAAC)2SiF2 (2), synthesized from the reduction of cAAC-SiF4 (1) using two equivalents of KC8 in the presence of one equivalent of cAAC. In the solid state compound 2 is stable at room temperature for a long time under inert conditions...
December 9, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/29222818/task-related-effective-connectivity-reveals-that-the-cortical-rich-club-gates-cortex-wide-communication
#6
Mario Senden, Niels Reuter, Martijn P van den Heuvel, Rainer Goebel, Gustavo Deco, Matthieu Gilson
Higher cognition may require the globally coordinated integration of specialized brain regions into functional networks. A collection of structural cortical hubs-referred to as the rich club-has been hypothesized to support task-specific functional integration. In the present paper, we use a whole-cortex model to estimate directed interactions between 68 cortical regions from functional magnetic resonance imaging activity for four different tasks (reflecting different cognitive domains) and resting state. We analyze the state-dependent input and output effective connectivity (EC) of the structural rich club and relate these to whole-cortex dynamics and network reconfigurations...
December 8, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/29222763/designing-optimized-production-hosts-by-metabolic-modeling
#7
Christian Jungreuthmayer, Matthias P Gerstl, David A Peña Navarro, Michael Hanscho, David E Ruckerbauer, Jürgen Zanghellini
Many of the complex and expensive production steps in the chemical industry are readily available in living cells. In order to overcome the metabolic limits of these cells, the optimal genetic intervention strategies can be computed by the use of metabolic modeling. Elementary flux mode analysis (EFMA) is an ideal tool for this task, as it does not require defining a cellular objective function. We present two EFMA-based methods to optimize production hosts: (1) the standard approach that can only be used for small and medium scale metabolic networks and (2) the advanced dual system approach that can be utilized to directly compute intervention strategies in a genome-scale metabolic model...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29222754/template-assisted-metabolic-reconstruction-and-assembly-of-hybrid-bacterial-models
#8
Tiziano Vignolini, Alessio Mengoni, Marco Fondi
Intraspecific genomic exchanges happen frequently between bacteria living in the same natural environment and can also be performed artificially in the laboratory for basic research or genetic/metabolic engineering purposes. In silico metabolic reconstruction and simulation of the metabolism of the hybrid strains that result from these processes can be used to predict the phenotypic outcome of such genomic rearrangements; this can be especially helpful as a designing tool in the purview of synthetic biology...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29222753/integration-of-comparative-genomics-with-genome-scale-metabolic-modeling-to-investigate-strain-specific-phenotypical-differences
#9
Jonathan Monk, Emanuele Bosi
Genome-scale metabolic reconstructions are powerful resources that allow translation biological knowledge and genomic information to phenotypical predictions using a number of constraint-based methods. This approach has been applied in recent years to gain deep insights into the cellular phenotype role of the genes at a systems-level, driving the design of targeted experiments and paving the way for knowledge-based synthetic biology.The identification of genetic determinants underlying the variability at the phenotypical level is crucial to understand the evolutionary trajectories of a bacterial species...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29222750/the-fastcore-family-for-the-fast-reconstruction-of-compact-context-specific-metabolic-networks-models
#10
Maria Pires Pacheco, Thomas Sauter
The FASTCORE family is a family of algorithms that are mainly used to build context-specific models but can also be applied to other tasks such as gapfilling and consistency testing. The FASTCORE family has very low computational demands with running times that are several orders of magnitude lower than its main competitors. Furthermore, the models built by the FASTCORE family have a better resolution power (defined as the ability to capture metabolic variations between different tissues, cell types, or contexts) than models from other algorithms...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29222748/analyzing-and-designing-cell-factories-with-optflux
#11
Paulo Vilaça, Paulo Maia, Hugo Giesteira, Isabel Rocha, Miguel Rocha
OptFlux was launched in 2010 as the first open-source and user-friendly platform containing all the major methods for performing metabolic engineering tasks in silico. Main features included the possibility of performing microbial strain simulations with widely used methods such as Flux Balance Analysis and strain design using Evolutionary Algorithms. Since then, OptFlux suffered a major re-factoring to improve its efficiency and reliability, while many features were added in the form of novel plug-ins, such as the BioVisualizer and the over/under expression plug-ins...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29222726/non-auditory-electrophysiological-potentials-preceding-dolphin-biosonar-click-production
#12
James J Finneran, Jason Mulsow, Ryan Jones, Dorian S Houser, Alyssa W Accomando, Sam H Ridgway
The auditory brainstem response to a dolphin's own emitted biosonar click can be measured by averaging epochs of the instantaneous electroencephalogram (EEG) that are time-locked to the emitted click. In this study, averaged EEGs were measured using surface electrodes placed on the head in six different configurations while dolphins performed an echolocation task. Simultaneously, biosonar click emissions were measured using contact hydrophones on the melon and a hydrophone in the farfield. The averaged EEGs revealed an electrophysiological potential (the pre-auditory wave, PAW) that preceded the production of each biosonar click...
December 8, 2017: Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology
https://www.readbyqxmd.com/read/29222722/binaural-auditory-beats-affect-long-term-memory
#13
Miguel Garcia-Argibay, Miguel A Santed, José M Reales
The presentation of two pure tones to each ear separately with a slight difference in their frequency results in the perception of a single tone that fluctuates in amplitude at a frequency that equals the difference of interaural frequencies. This perceptual phenomenon is known as binaural auditory beats, and it is thought to entrain electrocortical activity and enhance cognition functions such as attention and memory. The aim of this study was to determine the effect of binaural auditory beats on long-term memory...
December 8, 2017: Psychological Research
https://www.readbyqxmd.com/read/29222695/the-effects-of-enhanced-attention-and-working-memory-on-smooth-pursuit-eye-movement
#14
Jacob L Stubbs, Sherryse L Corrow, Benjamin Kiang, William J Panenka, Jason J S Barton
It has long been suggested that increasing attentional demands can alter smooth pursuit eye movements, but the precise nature of the changes generated is not clear. Our goal was to examine smooth pursuit with a task that enhanced attention to the target and that increased demands on working memory, without distracting from the target. 15 subjects tracked a target moving around a predictable circular trajectory at a constant tangential velocity. An n-back task with two levels of additional working memory load was integrated into the pursuit target to increase cognitive demands...
December 8, 2017: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/29222686/eeg-source-imaging-indices-of-cognitive-control-show-associations-with-dopamine-system-genes
#15
G McLoughlin, J Palmer, S Makeig, N Bigdely-Shamlo, T Banaschewski, M Laucht, D Brandeis
Cognitive or executive control is a critical mental ability, an important marker of mental illness, and among the most heritable of neurocognitive traits. Two candidate genes, catechol-O-methyltransferase (COMT) and DRD4, which both have a roles in the regulation of cortical dopamine, have been consistently associated with cognitive control. Here, we predicted that individuals with the COMT Met/Met allele would show improved response execution and inhibition as indexed by event-related potentials in a Go/NoGo task, while individuals with the DRD4 7-repeat allele would show impaired brain activity...
December 8, 2017: Brain Topography
https://www.readbyqxmd.com/read/29222668/responsibility-for-scientific-misconduct-in-collaborative-papers
#16
Gert Helgesson, Stefan Eriksson
This paper concerns the responsibility of co-authors in cases of scientific misconduct. Arguments in research integrity guidelines and in the bioethics literature concerning authorship responsibilities are discussed. It is argued that it is unreasonable to claim that for every case where a research paper is found to be fraudulent, each author is morally responsible for all aspects of that paper, or that one particular author has such a responsibility. It is further argued that it is more constructive to specify what task responsibilities come with different roles in a project and describe what kinds of situations or events call for some kind of action, and what the appropriate actions might be...
December 8, 2017: Medicine, Health Care, and Philosophy
https://www.readbyqxmd.com/read/29222625/using-patient-feedback-to-optimize-the-design-of-a-certolizumab-pegol-electromechanical-self-injection-device-insights-from-human-factors-studies
#17
Barbara Domańska, Oliver Stumpp, Steven Poon, Serkan Oray, Irina Mountian, Clovis Pichon
INTRODUCTION: We incorporated patient feedback from human factors studies (HFS) in the patient-centric design and validation of ava®, an electromechanical device (e-Device) for self-injecting the anti-tumor necrosis factor certolizumab pegol (CZP). METHODS: Healthcare professionals, caregivers, healthy volunteers, and patients with rheumatoid arthritis, psoriatic arthritis, ankylosing spondylitis, or Crohn's disease participated in 11 formative HFS to optimize the e-Device design through intended user feedback; nine studies involved simulated injections...
December 8, 2017: Advances in Therapy
https://www.readbyqxmd.com/read/29222612/how-do-parents-manage-irritability-challenging-behaviour-non-compliance-and-anxiety-in-children-with-autism-spectrum-disorders-a-meta-synthesis
#18
Elizabeth O'Nions, Francesca Happé, Kris Evers, Hannah Boonen, Ilse Noens
Although there is increasing research interest in the parenting of children with ASD, at present, little is known about everyday strategies used to manage problem behaviour. We conducted a meta-synthesis to explore what strategies parents use to manage irritability, non-compliance, challenging behaviour and anxiety in their children with ASD. Approaches included: (1) accommodating the child; (2) modifying the environment; (3) providing structure, routine and occupation; (4) supervision and monitoring; (5) managing non-compliance with everyday tasks; (6) responding to problem behaviour; (7) managing distress; (8) maintaining safety and (9) analysing and planning...
December 8, 2017: Journal of Autism and Developmental Disorders
https://www.readbyqxmd.com/read/29222601/monitoring-small-pioneer-trees-in-the-forest-tundra-ecotone-using-multi-temporal-airborne-laser-scanning-data-to-model-height-growth
#19
Marius Hauglin, Ole Martin Bollandsås, Terje Gobakken, Erik Næsset
Monitoring of forest resources through national forest inventory programmes is carried out in many countries. The expected climate changes will affect trees and forests and might cause an expansion of trees into presently treeless areas, such as above the current alpine tree line. It is therefore a need to develop methods that enable the inclusion of also these areas into monitoring programmes. Airborne laser scanning (ALS) is an established tool in operational forest inventories, and could be a viable option for monitoring tasks...
December 8, 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/29222584/-preservation-of-the-outer-ear-in-a%C3%A2-complex-burn-injury
#20
Fabian Medved, Hans-Eberhard Schaller, Jens Martin Rothenberger, Manuel Held, Kevin Beutler, Cedric E Boesch
Saving the outer ear in burn injuries is a challenging task for the treating surgeon that should not be underestimated. Burns which are initially evaluated as superficial, particularly in this region, often have a tendency to undergo progressive tissue destruction whereby conservative treatment is often no longer sufficient to preserve the skin of the auricle with the underlying cartilage. Various possibilities for saving the ear and for ear reconstruction are described, but in the case of severely burned patients it is often necessary to carry out a quick and relatively simple treatment...
December 8, 2017: Der Unfallchirurg
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