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https://www.readbyqxmd.com/read/28637341/assessment-of-workers-exposure-to-grain-dust-and-bioaerosols-during-the-loading-of-vessels-hold-an-example-at-a-port-in-the-province-of-qu%C3%A3-bec
#1
Geneviève Marchand, Marie Gardette, Kiet Nguyen, Valérie Amano, Eve Neesham-Grenon, Maximilien Debia
Longshoremen are exposed to large amounts of grain dust while loading of grain into the holds of vessels. Grain dust inhalation has been linked to respiratory diseases such as chronic bronchitis, hypersensitivity, pneumonitis, and toxic pneumonitis. Our objective was to characterize the exposure of longshoremen to inhalable and total dust, endotoxins, and cultivable bacteria and fungi during the loading of grain in a vessel's hold at the Port of Montreal in order to assess the potential health risks. Sampling campaigns were conducted during the loading of two different types of grain (wheat and corn)...
June 15, 2017: Annals of Work Exposures and Health
https://www.readbyqxmd.com/read/28636453/testing-the-efficacy-of-existing-force-endurance-models-to-account-for-the-prevalence-of-obesity-in-the-workforce
#2
Mojdeh Pajoutan, Lora A Cavuoto, Ranjana K Mehta
This study evaluated whether the existing force-endurance relationship models are predictive of endurance time for overweight and obese individuals, and if not, provide revised models that can be applied for ergonomics practice. Data was collected from 141 participants (49 normal weight, 50 overweight, 42 obese) who each performed isometric endurance tasks of hand grip, shoulder flexion, and trunk extension at four levels of relative workload. Subject-specific fatigue rates and a general model of the force-endurance relationship were determined and compared to two fatigue models from the literature...
June 21, 2017: Journal of Occupational and Environmental Hygiene
https://www.readbyqxmd.com/read/28636081/cell-size-and-wall-dimensions-drive-distinct-variability-of-earlywood-and-latewood-density-in-northern-hemisphere-conifers
#3
Jesper Björklund, Kristina Seftigen, Fritz Schweingruber, Patrick Fonti, Georg von Arx, Marina V Bryukhanova, Henri E Cuny, Marco Carrer, Daniele Castagneri, David C Frank
Interannual variability of wood density - an important plant functional trait and environmental proxy - in conifers is poorly understood. We therefore explored the anatomical basis of density. We hypothesized that earlywood density is determined by tracheid size and latewood density by wall dimensions, reflecting their different functional tasks. To determine general patterns of variability, density parameters from 27 species and 349 sites across the Northern Hemisphere were correlated to tree-ring width parameters and local climate...
June 21, 2017: New Phytologist
https://www.readbyqxmd.com/read/28627364/modulating-perceptual-complexity-and-load-reveals-degradation-of-the-visual-working-memory-network-in-ageing
#4
Sobanawartiny Wijeakumar, Vincent A Magnotta, John P Spencer
Previous neuroimaging studies have reported a posterior to anterior shift of activation in ageing (PASA). Here, we explore the nature of this shift by modulating load (1,2 or 3 items) and perceptual complexity in two variants of a visual working memory task (VWM): a 'simple' color and a 'complex' shape change detection task. Functional near-infrared spectroscopy (fNIRS) was used to record changes in activation in younger (N=24) and older adults (N=24). Older adults exhibited PASA by showing lesser activation in the posterior cortex and greater activation in the anterior cortex when compared to younger adults...
June 13, 2017: NeuroImage
https://www.readbyqxmd.com/read/28625494/acute-stress-shifts-the-balance-between-controlled-and-automatic-processes-in-prospective-memory
#5
Marcus Möschl, Moritz Walser, Franziska Plessow, Thomas Goschke, Rico Fischer
In everyday life we frequently rely on our abilities to postpone intentions until later occasions (prospective memory; PM) and to deactivate completed intentions even in stressful situations. Yet, little is known about the effects of acute stress on these abilities. In the present work we investigated the impact of acute stress on PM functioning under high task demands. 1) Different from previous studies, in which intention deactivation required mostly low processing demands, we used salient focal PM cues to induce high processing demands during intention-deactivation phases...
June 15, 2017: Neurobiology of Learning and Memory
https://www.readbyqxmd.com/read/28625430/sensorimotor-and-executive-function-slowing-in-anesthesiology-residents-after-overnight-shifts
#6
George W Williams, Bairavi Shankar, Eliana M Klier, Alice Z Chuang, Salma El Marjiya-Villarreal, Omonele O Nwokolo, Aanchal Sharma, Anne B Sereno
STUDY OBJECTIVE: Medical residents working overnight call shifts experience sleep deprivation and circadian clock disruption. This leads to deficits in sensorimotor function and increases in workplace accidents. Using quick tablet-based tasks, we investigate whether measureable executive function differences exist following a single overnight call versus routine shift, and whether factors like stress, rest and caffeine affect these measures. DESIGN: A prospective, observational, longitudinal, comparison study was conducted...
August 2017: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/28620345/memory-for-spatial-locations-in-a-patient-with-near-space-neglect-and-optic-ataxia-involvement-of-the-occipitotemporal-stream
#7
Sergio Chieffi, Giovanni Messina, Antonietta Messina, Ines Villano, Vincenzo Monda, Ferdinando Ivano Ambra, Elisabetta Garofalo, Felice Romano, Maria Pina Mollica, Marcellino Monda, Alessandro Iavarone
Previous studies suggested that the occipitoparietal stream orients attention toward the near/lower space and is involved in immediate reaching, whereas the occipitotemporal stream orients attention toward the far/upper space and is involved in delayed reaching. In the present study, we investigated the role of the occipitotemporal stream in attention orienting and delayed reaching in a patient (GP) with bilateral damage to the occipitoparietal areas and optic ataxia. GP and healthy controls took part in three experiments...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28620074/regulatory-bc1-rna-in-cognitive-control
#8
Anna Iacoangeli, Aderemi Dosunmu, Taesun Eom, Dimitre G Stefanov, Henri Tiedge
Dendritic regulatory BC1 RNA is a non-protein-coding (npc) RNA that operates in the translational control of gene expression. The absence of BC1 RNA in BC1 knockout (KO) animals causes translational dysregulation that entails neuronal phenotypic alterations including prolonged epileptiform discharges, audiogenic seizure activity in vivo, and excessive cortical oscillations in the γ frequency band. Here we asked whether BC1 RNA control is also required for higher brain functions such as learning, memory, or cognition...
July 2017: Learning & Memory
https://www.readbyqxmd.com/read/28615328/effect-of-eye-position-during-human-visual-vestibular-integration-of-heading-perception
#9
Benjamin Thomas Crane
Visual and inertial stimuli provide heading discrimination cues. Integration of these multisensory stimuli has been demonstrated to depend on their relative reliability. However, the reference frame of visual stimuli is eye centered while inertial is head centered and it remains unclear how these are reconciled with combined stimuli. Seven human subjects completed a heading discrimination task consisting of a 2s translation with a peak velocity of 16 cm/s. Eye position was varied between 0°, and ±25° left/right...
June 14, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/28614461/-improved-blood-pressure-control-to-reduce-cardiovascular-disease-morbidity-and-mortality-the-standardized-hypertension-treatment-and-prevention-project
#10
Pragna Patel, Pedro Ordunez, Donald DiPette, María Cristina Escobar, Trevor Hassell, Fernando Wyss, Anselm Hennis, Samira Asma, Sonia Angell
Hypertension is the leading remediable risk factor for cardiovascular disease, affecting more than 1 billion people worldwide, and is responsible for more than 10 million preventable deaths globally each year. While hypertension can be successfully diagnosed and treated, only one in seven persons with hypertension have controlled blood pressure. To meet the challenge of improving the control of hypertension, particularly in low- and middle-income countries, the authors developed the Standardized Hypertension Treatment and Prevention Project, which involves a health systems-strengthening approach that advocates for standardized hypertension management using evidence-based interventions...
June 8, 2017: Revista Panamericana de Salud Pública, Pan American Journal of Public Health
https://www.readbyqxmd.com/read/28611709/relationships-between-motor-and-executive-functions-and-the-effect-of-an-acute-coordinative-intervention-on-executive-functions-in-kindergartners
#11
Marion Stein, Max Auerswald, Mirjam Ebersbach
There is growing evidence indicating positive, causal effects of acute physical activity on cognitive performance of school children, adolescents, and adults. However, only a few studies examined these effects in kindergartners, even though correlational studies suggest moderate relationships between motor and cognitive functions in this age group. One aim of the present study was to examine the correlational relationships between motor and executive functions among 5- to 6-year-olds. Another aim was to test whether an acute coordinative intervention, which was adapted to the individual motor functions of the children, causally affected different executive functions (i...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28608801/automaticity-and-flexibility-of-s-r-retrieval-during-priming
#12
Hope Tobin, Elizabeth Race
Learned associations between stimuli and responses (S-R associations) make important contributions to behavioral and neural priming. The current study investigated the automaticity and flexibility of these S-R associations and whether the global task context in which they occur modulates the impact of S-R retrieval on priming. Participants engaged in a semantic repetition priming task in which S-R retrieval is known to influence priming. Across participants, repetition priming occurred in global task contexts (i...
June 13, 2017: Brain Sciences
https://www.readbyqxmd.com/read/28608170/stress-reactivity-as-a-pathway-from-attentional-control-deficits-in-everyday-life-to-depressive-symptoms-in-adolescent-girls
#13
Karen D Rudolph, Jennifer D Monti, Megan Flynn
The goal of this research was to expand theoretical models of adolescent depression to determine whether individual differences in cognitive processing-specifically attentional control deficits-help to explain increased risk for depression during adolescence. We also examined whether this pathway was stronger in girls than in boys. A longitudinal design was used to examine whether poor attentional control in everyday life (i.e., difficulties shifting between ideas, tasks, and activities) contributes to depression over time by fostering higher levels of stress reactivity...
June 13, 2017: Journal of Abnormal Child Psychology
https://www.readbyqxmd.com/read/28606563/participants-with-pharmacologically-impaired-taste-function-seek-out-more-intense-higher-calorie-stimuli
#14
Corinna A Noel, Meaghan Sugrue, Robin Dando
OBJECTIVE: Research suggests a weaker sense of taste in people with obesity, with the assumption that this debilitated taste response increases the desire for more intensely tasting stimuli to compensate for decreased taste input. However, empirical testing of this supposition remains largely absent. METHOD: In a randomized, repeated measure design, 51 healthy subjects were treated with varying concentrations of a tea containing Gymnema sylvestre (GS), to temporarily and selectively diminish sweet taste perception, or a control tea...
June 9, 2017: Appetite
https://www.readbyqxmd.com/read/28605698/intuitive-proportion-judgment-in-number-line-estimation-converging-evidence-from-multiple-tasks
#15
Emily Slusser, Hilary Barth
How children's understanding of numerical magnitudes changes over the course of development remains a key question in the study of numerical cognition. In an ongoing debate about the source of developmental change, some argue that children maintain and access different mental representations of number, with evidence coming largely from common number-line estimation tasks. In contrast, others argue that a theoretical framework based on psychophysical models of proportion estimation accounts for typical performance on these tasks...
June 9, 2017: Journal of Experimental Child Psychology
https://www.readbyqxmd.com/read/28604043/in-your-shoes-or-mine-shifting-from-other-to-self-perspective-is-vital-for-emotional-empathy
#16
Chui-De Chiu, Yei-Yu Yeh
Emotional empathy-feeling another person's affective states-entails simulating how one would feel in the same circumstance. Prior research has implicated the role of executive controls and shown a link between visuospatial perspective taking and personal disposition of empathy. No study has investigated how executive control processes involved in perspective shifting relate to emotional empathy. Incorporating a spatial perspective-taking task in a set switch paradigm, we investigated whether swiftly switching from the altercentric to the egocentric perspective is associated with heightened emotional empathy but not with accurate classification of low-level perceptual affective cues...
June 12, 2017: Emotion
https://www.readbyqxmd.com/read/28604029/staring-reality-in-the-face-a-comparison-of-social-attention-across-laboratory-and-real-world-measures-suggests-little-common-ground
#17
Dana A Hayward, Willa Voorhies, Jenna L Morris, Francesca Capozzi, Jelena Ristic
The ability to attend to someone else's gaze is thought to represent 1 of the essential building blocks of the human sociocognitive system. This behavior, termed social attention, has traditionally been assessed using laboratory procedures in which participants' response time and/or accuracy performance indexes attentional function. Recently, a parallel body of emerging research has started to examine social attention during real life social interactions using naturalistic and observational methodologies. The main goal of the present work was to begin connecting these two lines of inquiry...
June 12, 2017: Canadian Journal of Experimental Psychology, Revue Canadienne de Psychologie Expérimentale
https://www.readbyqxmd.com/read/28603772/compensatory-shifts-in-visual-perception-are-associated-with-hallucinations-in-lewy-body-disorders
#18
Alan Robert Bowman, Vicki Bruce, Christopher J Colbourn, Daniel Collerton
Visual hallucinations are a common, distressing, and disabling symptom of Lewy body and other diseases. Current models suggest that interactions in internal cognitive processes generate hallucinations. However, these neglect external factors. Pareidolic illusions are an experimental analogue of hallucinations. They are easily induced in Lewy body disease, have similar content to spontaneous hallucinations, and respond to cholinesterase inhibitors in the same way. We used a primed pareidolia task with hallucinating participants with Lewy body disorders (n = 16), non-hallucinating participants with Lewy body disorders (n = 19), and healthy controls (n = 20)...
2017: Cognitive Research: Principles and Implications
https://www.readbyqxmd.com/read/28603509/emerging-trends-in-the-multimodal-nature-of-cognition-touch-and-handedness
#19
REVIEW
Miriam Ittyerah
Advances in tactile cognition and haptics have increased our understanding of the multimodal nature of touch. Haptic data is mostly confined to human performance arising from the flexibility and dexterity of the fingers used to discriminate shapes and objects. Studies with infants indicate that recognition of objects either seen or held in the hand is possible during early periods of infancy. Evidence indicates performance differences between the hands decrease over periods of development, reflecting maturation of the cortical brain system supporting motor skills...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28601696/anticipatory-processing-in-social-anxiety-investigation-using-attentional-control-theory
#20
Rachel A Sluis, Mark J Boschen, David L Neumann, Karen Murphy
BACKGROUND AND OBJECTIVES: Cognitive models of social anxiety disorder (SAD) emphasize anticipatory processing as a prominent maintaining factor occurring before social-evaluative events. While anticipatory processing is a maladaptive process, the cognitive mechanisms that underlie ineffective control of attention are still unclear. The present study tested predictions derived from attentional control theory in a sample of undergraduate students high and low on social anxiety symptoms...
June 1, 2017: Journal of Behavior Therapy and Experimental Psychiatry
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