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Behavioural insights

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https://www.readbyqxmd.com/read/28088114/between-exposure-access-and-use-reconsidering-foodscape-influences-on-dietary-behaviours
#1
Christelle Clary, Stephen Augustus Matthews, Yan Kestens
Good accessibility to both healthy and unhealthy food outlets is a greater reality than food deserts. Yet, there is a lack of conceptual insights on the contextual factors that push individuals to opt for healthy or unhealthy food outlets when both options are accessible. Our comprehension of foodscape influences on dietary behaviours would benefit from a better understanding of the decision-making process for food outlet choices. In this paper, we build on the fundamental position that outlet choices are conditioned by how much outlets' attributes accommodate individuals' constraints and preferences...
January 11, 2017: Health & Place
https://www.readbyqxmd.com/read/28081482/following-lives-undergoing-change-flux-study-implementation-and-baseline-prevalence-of-drug-use-in-an-online-cohort-study-of-gay-and-bisexual-men-in-australia
#2
Mohamed A Hammoud, Fengyi Jin, Louisa Degenhardt, Toby Lea, Lisa Maher, Jeffrey Grierson, Brent Mackie, Marcus Pastorelli, Colin Batrouney, Nicky Bath, Jack Bradley, Garrett P Prestage
BACKGROUND: Drug use among gay and bisexual men (GBM) is higher than most populations. The use of crystal methamphetamine, erectile dysfunction medication (EDM), and amyl nitrite have been associated with sexual risk behaviour and HIV infection among gay and bisexual men (GBM). OBJECTIVE: This paper describes an online prospective observational study of licit and illicit drug use among GBM and explores baseline prevalence of drug use in this sample. Capturing these data poses challenges as participants are required to disclose potentially illegal behaviours in a geographically dispersed country...
January 9, 2017: International Journal on Drug Policy
https://www.readbyqxmd.com/read/28080968/interoception-homeostatic-emotions-and-sympathovagal-balance
#3
Irina A Strigo, Arthur D Bud Craig
We briefly review the evidence for distinct neuroanatomical substrates that underlie interoception in humans, and we explain how they substantialize feelings from the body (in the insular cortex) that are conjoined with homeostatic motivations that guide adaptive behaviours (in the cingulate cortex). This hierarchical sensorimotor architecture coincides with the limbic cortical architecture that underlies emotions, and thus we regard interoceptive feelings and their conjoint motivations as homeostatic emotions We describe how bivalent feelings, emotions and sympathovagal balance can be organized and regulated efficiently in the bicameral forebrain as asymmetric positive/negative, approach/avoidance and parasympathetic/sympathetic components...
November 19, 2016: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/28080965/feeling-learning-from-and-being-aware-of-inner-states-interoceptive-dimensions-in-neurodegeneration-and-stroke
#4
Indira García-Cordero, Lucas Sedeño, Laura de la Fuente, Andrea Slachevsky, Gonzalo Forno, Francisco Klein, Patricia Lillo, Jesica Ferrari, Clara Rodriguez, Julian Bustin, Teresa Torralva, Sandra Baez, Adrian Yoris, Sol Esteves, Margherita Melloni, Paula Salamone, David Huepe, Facundo Manes, Adolfo M García, Agustín Ibañez
Interoception is a complex process encompassing multiple dimensions, such as accuracy, learning and awareness. Here, we examined whether each of those dimensions relies on specialized neural regions distributed throughout the vast interoceptive network. To this end, we obtained relevant measures of cardiac interoception in healthy subjects and patients offering contrastive lesion models of neurodegeneration and focal brain damage: behavioural variant fronto-temporal dementia (bvFTD), Alzheimer's disease (AD) and fronto-insular stroke...
November 19, 2016: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/28080947/hiv-testing-intervention-development-among-men-who-have-sex-with-men-in-the-developed-world
#5
Paul Flowers, Claudia Estcourt, Pam Sonnenberg, Fiona Burns
HIV testing is a 'gateway' technology, enabling access to treatment and HIV prevention. Biomedical approaches to prevention, such as pre-exposure prophylaxis and treatment as prevention, require accurate and regular HIV test results. HIV testing also represents a powerful 'teachable moment' for behavioural prevention. An increasing range of HIV tests and the emergence of self-managed diagnostic technologies (e.g. self-testing) means there is now considerable diversification of when, where and how results are available to those who test...
January 13, 2017: Sexual Health
https://www.readbyqxmd.com/read/28079207/hysteresis-phenomena-in-perovskite-solar-cells-the-many-and-varied-effects-of-ionic-accumulation
#6
Daniel A Jacobs, Yiliang Wu, Heping Shen, Chog Barugkin, Fiona J Beck, Thomas P White, Klaus Weber, Kylie R Catchpole
The issue of hysteresis in perovskite solar cells has now been convincingly linked to the presence of mobile ions within the perovskite layer. Here we test the limits of the ionic theory by attempting to account for a number of exotic characterization results using a detailed numerical device model that incorporates ionic charge accumulation at the perovskite interfaces. Our experimental observations include a temporary enhancement in open-circuit voltage following prolonged periods of negative bias, dramatically S-shaped current-voltage sweeps, decreased current extraction following positive biasing or "inverted hysteresis", and non-monotonic transient behaviours in the dark and the light...
January 12, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28078846/mir-2861-is-involved-in-osteogenic-commitment-of-human-periodontal-ligament-stem-cells-grown-onto-3d-scaffold
#7
F Diomede, I Merciaro, S Martinotti, M F X B Cavalcanti, S Caputi, E Mazzon, O Trubiani
miR-2861 endorsing osteoblast differentiation through the overexpression of Runt-related transcription factor 2 (RUNX2) protein has been recently described. In this study we evaluated: the performance of living construct, composed by human Periodontal Ligament Stem Cells (hPDLSCs) and 3D scaffold (EXg), and the behaviour of miR-2861/RUNX2 expression pathway on the osteogenic commitment. Human PDLSCs were seeded with and without EXg scaffold and cultured under basal and osteogenic conditions. Morphological features, adhesiveness and differentiation abilities were analysed using scanning electron and confocal laser scanning microscopy...
October 2016: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28077863/what-have-human-experimental-overfeeding-studies-taught-us-about-adipose-tissue-expansion-and-susceptibility-to-obesity-and-metabolic-complications
#8
REVIEW
D J Cuthbertson, T Steele, J P Wilding, J C G Halford, J A Harrold, M Hamer, F Karpe
Overfeeding experiments, in which we impose short-term positive energy balance, help unravel the cellular, physiological and behavioural adaptations to nutrient excess. These studies mimic longer-term mismatched energy expenditure and intake. There is considerable inter-individual heterogeneity in the magnitude of weight gain when exposed to similar relative caloric excess reflecting variable activation of compensatory adaptive mechanisms. Significantly, given similar relative weight gain, individuals may be protected from/predisposed to metabolic complications (insulin resistance, dyslipidaemia, hypertension), non-alcoholic fatty liver disease and cardiovascular disease...
January 12, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28077035/nurses-online-behaviour-lessons-for-the-nursing-profession
#9
Janet Green
Social networking has become an extremely popular online activity, however like many activities on the internet, there are some privacy risks and concerns associated with its use. In recent years an increasing number of nurses have been censured or asked to appear before regulatory or registering authorities for unprofessional behaviour on social media sites. Problem behaviours identified include: inappropriate content and postings, crossing professional boundaries and breaching patient privacy and confidentiality...
January 12, 2017: Contemporary Nurse
https://www.readbyqxmd.com/read/28071715/in-situ-characterization-of-nanoparticles-using-rayleigh-scattering
#10
Biswajit Santra, Mikhail N Shneider, Roberto Car
We report a theoretical analysis showing that Rayleigh scattering could be used to monitor the growth of nanoparticles under arc discharge conditions. We compute the Rayleigh scattering cross sections of the nanoparticles by combining light scattering theory for gas-particle mixtures with calculations of the dynamic electronic polarizability of the nanoparticles. We find that the resolution of the Rayleigh scattering probe is adequate to detect nanoparticles as small as C60 at the expected concentrations of synthesis conditions in the arc periphery...
January 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28069563/brief-cognitive-behavioural-therapy-for-patients-in-the-community-with-schizophrenia-randomised-controlled-trial-in-beijing-china
#11
Zhi-Hua Guo, Zhan-Jiang Li, Yun Ma, Jing Sun, Jun-Hua Guo, Wen-Xiu Li, Zhi-Qiang Wang, Hui-Li Xu, Roger M K Ng, Douglas Turkington, David Kingdon
BACKGROUND: Brief cognitive-behavioural therapy (CBT) is an emerging treatment for schizophrenia in community settings; however, further trials are needed, especially in non-Western countries. AIMS: To test the effects of brief CBT for Chinese patients with schizophrenia in the community (trial registration: ChiCTR-TRC-13003709). METHOD: A total of 220 patients with schizophrenia from four districts of Beijing were randomly assigned to either brief CBT plus treatment as usual (TAU) or TAU alone...
January 9, 2017: British Journal of Psychiatry: the Journal of Mental Science
https://www.readbyqxmd.com/read/28069317/unconscious-collusion-an-interpretative-phenomenological-analysis-of-the-maternity-care-experiences-of-women-with-obesity-bmi%C3%A2-30kg-m%C3%A2
#12
Sandra Atkinson, Patricia Mannix McNamara
BACKGROUND: obstetric and midwifery literature consctinually emphasise incidence and consequence of obesity in pregnancy. However, they offer less consensus on how best to support women who are obese. Therefore, this study explores in depth the lived experience of women who have a Body Mass Index (BMI) ≥30kg/m². This exploration provides a bio-psycho-social understanding of the lived experience of women to identify how best to support them throughout their childbirth experience. METHODS: an Interpretative Phenomenological Analysis (IPA) design was adopted for this qualitative study...
December 16, 2016: Midwifery
https://www.readbyqxmd.com/read/28068561/classifying-the-variability-in-impact-and-active-peak-vertical-ground-reaction-forces-during-running-using-dfa-and-arfima-models
#13
Samantha L Winter, John H Challis
The vertical ground reaction force (VGRF) during rear-foot striking running typically exhibits peaks referred to as the impact peak and the active peak; their timings and magnitudes have been implicated in injury. Identifying the structure of time-series can provide insight into associated control processes. The purpose here was to detect long-range correlations associated with the time from first contact to impact peak (TIP) and active peak (TAP); and the magnitudes of impact (IPM) and active peaks (APM) using a Detrended Fluctuation Analysis, and Auto-Regressive Fractionally Integrated Moving Average models...
January 6, 2017: Human Movement Science
https://www.readbyqxmd.com/read/28066848/impact-of-solution-phase-behaviour-and-external-fields-on-thin-film-morphology-pcbm-and-rra-p3ht-model-system
#14
A A Y Guilbert, J T Cabral
We report the impact of the ternary solution phase behaviour on the film morphology and crystallization of a model polymer:fullerene system. We employ UV-Vis absorption spectroscopy, combined with sequential filtration and dilution, to establish the phase diagram for regio-random poly(3-hexylthiophene-2,5-diyl) and phenyl-C61-butyric acid methyl ester (PCBM) in chlorobenzene. Films are systematically cast from one- and two-phase regions decoupling homogeneous and heterogenous nucleation, and the role of pre-formed aggregates from solutions...
January 9, 2017: Soft Matter
https://www.readbyqxmd.com/read/28065781/ischemic-brain-injury-new-insights-on-the-protective-role-of-melatonin
#15
REVIEW
Eva Ramos, Paloma Patiño, Russel J Reiter, Emilio Gil-Martín, José Marco-Contelles, Esther Parada, Cristobal de Los Rios, Alejandro Romero, Javier Egea
Stroke represents one of the most common causes of brain's vulnerability for many millions of people worldwide. The plethora of physiopathological events associated with brain ischemia are regulate through multiple signaling pathways leading to the activation of oxidative stress process, Ca(2+) dyshomeostasis, mitochondrial dysfunction, proinflammatory mediators, excitotoxicity and/or programmed neuronal cell death. Understanding this cascade of molecular events is mandatory in order to develop new therapeutic strategies for stroke...
January 6, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28064404/heterogeneous-nanomechanical-properties-of-type-i-collagen-in-longitudinal-direction
#16
Ming Tang, Tong Li, Neha S Gandhi, Kevin Burrage, YuanTong Gu
Collagen is an abundant structural biopolymer in mammal vertebrates, providing structural support as well as mechanical integrity for connective tissues such as bone, ligament, and tendon. The mechanical behaviours of these tissues are determined by the nanomechanics of their structures at different hierarchies and the role of collagen structures in the extracellular matrix. Some studies revealed that there is significant microstructural difference in the longitudinal direction of the collagen fibril, which challenges the conventional rod-like assumption prevalently adopted in the existing studies...
January 7, 2017: Biomechanics and Modeling in Mechanobiology
https://www.readbyqxmd.com/read/28056066/what-do-patients-think-about-the-cause-of-their-mental-disorder-a-qualitative-and-quantitative-analysis-of-causal-beliefs-of-mental-disorder-in-inpatients-in-psychosomatic-rehabilitation
#17
Julia Luise Magaard, Holger Schulz, Anna Levke Brütt
BACKGROUND: Patients' causal beliefs about their mental disorders are important for treatment because they affect illness-related behaviours. However, there are few studies exploring patients' causal beliefs about their mental disorder. OBJECTIVES: (a) To qualitatively explore patients' causal beliefs of their mental disorder, (b) to explore frequencies of patients stating causal beliefs, and (c) to investigate differences of causal beliefs according to patients' primary diagnoses...
2017: PloS One
https://www.readbyqxmd.com/read/28052773/a-cluster-randomised-controlled-trial-to-promote-physical-activity-in-adolescents-the-raising-awareness-of-physical-activity-raw-pa-study
#18
Nicola D Ridgers, Anna Timperio, Helen Brown, Kylie Ball, Susie Macfarlane, Samuel K Lai, Kara Richards, Winsfred Ngan, Jo Salmon
BACKGROUND: Recent technological advances provide an alternative yet underutilised opportunity for promoting physical activity in youth. The primary aim of the Raising Awareness of Physical Activity (RAW-PA) Study is to examine the short- and longer-term impact of a wearable activity monitor combined with digital behaviour change resources on adolescents' daily physical activity levels. METHODS/DESIGN: RAW-PA is a 12 week, multicomponent physical activity intervention that utilises a popular activity tracker (Fitbit® Flex) and supporting digital materials that will be delivered online via social media...
January 4, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28044023/how-is-visual-salience-computed-in-the-brain-insights-from-behaviour-neurobiology-and-modelling
#19
REVIEW
Richard Veale, Ziad M Hafed, Masatoshi Yoshida
Inherent in visual scene analysis is a bottleneck associated with the need to sequentially sample locations with foveating eye movements. The concept of a 'saliency map' topographically encoding stimulus conspicuity over the visual scene has proven to be an efficient predictor of eye movements. Our work reviews insights into the neurobiological implementation of visual salience computation. We start by summarizing the role that different visual brain areas play in salience computation, whether at the level of feature analysis for bottom-up salience or at the level of goal-directed priority maps for output behaviour...
February 19, 2017: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/28044012/modelling-auditory-attention
#20
REVIEW
Emine Merve Kaya, Mounya Elhilali
Sounds in everyday life seldom appear in isolation. Both humans and machines are constantly flooded with a cacophony of sounds that need to be sorted through and scoured for relevant information-a phenomenon referred to as the 'cocktail party problem'. A key component in parsing acoustic scenes is the role of attention, which mediates perception and behaviour by focusing both sensory and cognitive resources on pertinent information in the stimulus space. The current article provides a review of modelling studies of auditory attention...
February 19, 2017: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
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