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https://www.readbyqxmd.com/read/28340213/effects-of-alcohol-dependence-severity-on-neural-correlates-of-delay-discounting
#1
Aaron C Lim, Anita Cservenka, Lara A Ray
Aims: The current study examines the relationship between alcohol dependence severity and delay discounting neural activation. Methods: Participants (N = 17; 6 female) completed measures of alcohol use and severity and a functional magnetic resonance imaging version of a delay discounting task. Results: Alcohol dependence severity was negatively associated with activation in superior frontal gyrus during impulsive relative to delayed decisions, and positively associated with activation in paracingulate gyrus and frontal pole in delayed relative to impulsive decisions...
March 18, 2017: Alcohol and Alcoholism: International Journal of the Medical Council on Alcoholism
https://www.readbyqxmd.com/read/28340206/monitoring-the-quality-of-cardiac-surgery-based-on-three-or-more-surgical-outcomes-using-a-new-variable-life-adjusted-display
#2
Fah Fatt Gan, Xu Tang, Yexin Zhu, Puay Weng Lim
Quality problem or issue: The traditional variable life-adjusted display (VLAD) is a graphical display of the difference between expected and actual cumulative deaths. The VLAD assumes binary outcomes: death within 30 days of an operation or survival beyond 30 days. Full recovery and bedridden for life, for example, are considered the same outcome. This binary classification results in a great loss of information. Initial assessment: Although there are many grades of survival, the binary outcomes are commonly used to classify surgical outcomes...
March 17, 2017: International Journal for Quality in Health Care
https://www.readbyqxmd.com/read/28340203/been-there-done-that-the-experience-of-acting-as-a-young-adult-mentor-to-adolescents-living-with-chronic-illness
#3
Sara Ahola Kohut, Jennifer Stinson, Paula Forgeron, Stephanie Luca, Lauren Harris
To explore the perceived benefits and challenges of acting as a young adult peer mentor to adolescents with chronic illness.   A qualitative descriptive study, using interviews and a focus group, explored the perceptions of young adult peer mentors following participation in the iPeer2Peer program, a Skype-based peer-mentorship program for adolescents with chronic illness. Interviews and focus group data were transcribed and analyzed using inductive content analysis.   Ten peer mentors (20.00 ± 1...
March 16, 2017: Journal of Pediatric Psychology
https://www.readbyqxmd.com/read/28340051/protective-factors-for-work-ability-in-preschool-teachers
#4
I Sottimano, S Viotti, G Guidetti, D Converso
Background: Work ability (WA) describes the physical and intellectual resources on which individuals can rely to respond to work demands. While several studies have investigated the protective role of work-related psychosocial factors on WA, only a few have examined differences across age cohorts. Moreover, few studies have investigated WA in the educational context and most of those did not consider preschool teachers. Aims: To examine the role of psychosocial factors (support from colleagues, support from supervisors, work meaning, reward, skill discretion and autonomy) in sustaining WA among preschool teachers in different age cohorts...
March 8, 2017: Occupational Medicine
https://www.readbyqxmd.com/read/28340034/estimating-demand-and-cross-price-elasticity-for-very-low-nicotine-content-vlnc-cigarettes-using-a-simulated-demand-task
#5
Megan R Tucker, Murray Laugesen, Randolph C Grace
Introduction: Very Low Nicotine Content (VLNC) cigarettes might be useful as part of a tobacco control strategy, but relatively little is known about their acceptability as substitutes for regular cigarettes. We compared subjective effects and demand for regular cigarettes and Very Low Nicotine Content (VLNC) cigarettes, and estimated cross-price elasticity for VLNC cigarettes, using simulated demand tasks. Methods: 40 New Zealand smokers sampled a VLNC cigarette and completed Cigarette Purchase Tasks to indicate their demand for regular cigarettes and VLNC cigarettes at a range of prices, and a cross-price task indicating how many regular cigarettes and VLNC cigarettes they would purchase at 0...
March 3, 2017: Nicotine & Tobacco Research: Official Journal of the Society for Research on Nicotine and Tobacco
https://www.readbyqxmd.com/read/28339298/evaluations-and-future-plans-after-casual-sexual-experiences-differences-across-partner-type
#6
Rose Wesche, Shannon E Claxton, Eva S Lefkowitz, Manfred H M van Dulmen
Casual sexual relationships and experiences (CSREs) are common among emerging adults, and their diversity may contribute to variability in their associations with mental health and future romantic relationship development. The present research used multiple regression analyses to examine how CSRE type (casual dating, friends with benefits [FWB], or booty call/one-night stand) is associated with short-term outcomes of these experiences, including positive and negative evaluations, plans to start a romantic relationship with a CSRE partner, and general plans for future CSREs...
March 24, 2017: Journal of Sex Research
https://www.readbyqxmd.com/read/28335000/better-than-sham-a-double-blind-placebo-controlled-neurofeedback-study-in-primary-insomnia
#7
Manuel Schabus, Hermann Griessenberger, Maria-Teresa Gnjezda, Dominik P J Heib, Malgorzata Wislowska, Kerstin Hoedlmoser
Neurofeedback training builds upon the simple concept of instrumental conditioning, i.e. behaviour that is rewarded is more likely to reoccur, an effect Thorndike referred to as the 'law of effect'. In the case of neurofeedback, information about specific electroencephalographic activity is fed back to the participant who is rewarded whenever the desired electroencephalography pattern is generated. If some kind of hyperarousal needs to be addressed, the neurofeedback community considers sensorimotor rhythm neurofeedback as the gold standard...
February 23, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/28334960/neural-mechanisms-of-reinforcement-learning-in-unmedicated-patients-with-major-depressive-disorder
#8
Marcus Rothkirch, Jonas Tonn, Stephan Köhler, Philipp Sterzer
According to current concepts, major depressive disorder is strongly related to dysfunctional neural processing of motivational information, entailing impairments in reinforcement learning. While computational modelling can reveal the precise nature of neural learning signals, it has not been used to study learning-related neural dysfunctions in unmedicated patients with major depressive disorder so far. We thus aimed at comparing the neural coding of reward and punishment prediction errors, representing indicators of neural learning-related processes, between unmedicated patients with major depressive disorder and healthy participants...
February 20, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/28334633/now-or-not-now-the-influence-of-alexithymia-on-intertemporal-decision-making
#9
Cristina Scarpazza, Manuela Sellitto, Giuseppe di Pellegrino
Optimal intertemporal decisions arise from the balance between an emotional-visceral component, signaling the need for immediate gratification, and a rational, long-term oriented component. Alexithymia, a personality construct characterized by amplified sensitivity to internal bodily signals of arousal, may result in enhanced activation of the emotional-visceral component over the cognitive-rational one. To test this hypothesis, participants with high- and low-alexithymia level were compared at an intertemporal decision-making task, and their choice behavior correlated with their interoceptive sensitivity...
March 20, 2017: Brain and Cognition
https://www.readbyqxmd.com/read/28334611/somatosensory-cortex-plays-an-essential-role-in-forelimb-motor-adaptation-in-mice
#10
Mackenzie Weygandt Mathis, Alexander Mathis, Naoshige Uchida
Our motor outputs are constantly re-calibrated to adapt to systematic perturbations. This motor adaptation is thought to depend on the ability to form a memory of a systematic perturbation, often called an internal model. However, the mechanisms underlying the formation, storage, and expression of such models remain unknown. Here, we developed a mouse model to study forelimb adaptation to force field perturbations. We found that temporally precise photoinhibition of somatosensory cortex (S1) applied concurrently with the force field abolished the ability to update subsequent motor commands needed to reduce motor errors...
March 22, 2017: Neuron
https://www.readbyqxmd.com/read/28334608/parvalbumin-interneurons-modulate-striatal-output-and-enhance-performance-during-associative-learning
#11
Kwang Lee, Sandra M Holley, Justin L Shobe, Natalie C Chong, Carlos Cepeda, Michael S Levine, Sotiris C Masmanidis
The prevailing view is that striatal parvalbumin (PV)-positive interneurons primarily function to downregulate medium spiny projection neuron (MSN) activity via monosynaptic inhibitory signaling. Here, by combining in vivo neural recordings and optogenetics, we unexpectedly find that both suppressing and over-activating PV cells attenuates spontaneous MSN activity. To account for this, we find that, in addition to monosynaptic coupling, PV-MSN interactions are mediated by a competing disynaptic inhibitory circuit involving a variety of neuropeptide Y-expressing interneurons...
March 22, 2017: Neuron
https://www.readbyqxmd.com/read/28334466/home-care-services-for-sick-children-healthcare-professionals-conceptions-of-challenges-and-facilitators
#12
Charlotte Castor, Inger Hallström, Helena Hansson, Kajsa Landgren
AIMS AND OBJECTIVES: To explore healthcare professionals' conceptions of caring for sick children in home care services. BACKGROUND: Families often prefer home care to hospital care and the number of home care services for children is increasing. Caring for children at home has been recognised as challenging for healthcare professionals in home care services used to providing care predominately for adults. DESIGN: An inductive qualitative design...
March 23, 2017: Journal of Clinical Nursing
https://www.readbyqxmd.com/read/28334444/the-partial-dopamine-d2-receptor-agonist-aripiprazole-is-associated-with-weight-gain-in-adolescent-anorexia-nervosa
#13
Guido K W Frank, Megan E Shott, Jennifer O Hagman, Marissa A Schiel, Marisa C DeGuzman, Brogan Rossi
OBJECTIVE: Finding medication to support treatment of anorexia nervosa has been difficult. Neuroscience-based approaches may help in this effort. Recent brain imaging studies in adults and adolescents with anorexia nervosa suggest that dopamine-related reward circuits are hypersensitive and could provide a treatment target. METHODS: Here, we present a retrospective chart review of 106 adolescents with anorexia nervosa some of whom were treated with the dopamine D2 receptor partial agonist aripiprazole during treatment in a specialized eating disorder program...
March 23, 2017: International Journal of Eating Disorders
https://www.readbyqxmd.com/read/28334440/reward-processing-in-gain-versus-loss-context-an-erp-study
#14
Ya Zheng, Qi Li, Yuanyuan Zhang, Qi Li, Huijuan Shen, Qianhui Gao, Shiyu Zhou
Previous research has shown that consummatory ERP components are sensitive to contextual valence. The present study investigated the contextual valence effect across anticipatory and consummatory phases by requiring participants to play a simple gambling task during a gain context and a loss context. During the anticipatory phase, the cue-P3 was more positive in the gain context compared to the loss context, whereas the stimulus-preceding negativity (SPN) was comparable across the two contexts. With respect to the consummatory phase, the feedback-related negativity (FRN) in response to the zero-value outcome was more negative in the gain versus loss context, whereas the feedback P3 (fb-P3) in response to the zero-value outcome was insensitive to contextual valence...
March 23, 2017: Psychophysiology
https://www.readbyqxmd.com/read/28334072/the-lateral-habenula-as-a-relay-of-cortical-information-to-process-working-memory
#15
Victor Mathis, Alexandra Barbelivien, Monique Majchrzak, Chantal Mathis, Jean-Christophe Cassel, Lucas Lecourtier
Working memory is a cognitive ability allowing the temporary storage of information to solve problems or adjust behavior. While working memory is known to mainly depend on the medial prefrontal cortex (mPFC), very few is known about how cortical information are relayed subcortically. By its connectivity, the lateral habenula (lHb) might act as a subcortical relay for cortical information. Indeed, the lHb receives inputs from several mPFC subregions, and recent findings suggest a role for the lHb in online processing of spatial information, a fundamental aspect of working memory...
October 13, 2016: Cerebral Cortex
https://www.readbyqxmd.com/read/28333496/divergent-effects-of-distance-versus-velocity-disturbances-on-emotional-experiences-during-goal-pursuit
#16
James W Beck, Abigail A Scholer, Jeffrey Hughes
Disturbances are factors outside of a person's control that influence goal progress. Although disturbances are typically included in theoretical accounts of goal pursuit, relatively little empirical research has explicitly considered the effects of disturbances on the goal-striving process. We address this gap in the literature by examining the effects that disturbances have on the emotional experience of goal pursuit. More importantly, we differentiate between distance disturbances (changes to the amount of progress made) and velocity disturbances (changes to the rate of progress made)...
March 23, 2017: Journal of Applied Psychology
https://www.readbyqxmd.com/read/28333486/transitive-inference-in-humans-homo-sapiens-and-rhesus-macaques-macaca-mulatta-after-massed-training-of-the-last-two-list-items
#17
Greg Jensen, Yelda Alkan, Fabian Muñoz, Vincent P Ferrera, Herbert S Terrace
Transitive inference (TI) is a classic learning paradigm for which the relative contributions of experienced rewards and representation-based inference have been debated vigorously, particularly regarding the notion that animals are capable of logic and reasoning. Rhesus macaque subjects and human participants performed a TI task in which, prior to learning a 7-item list (ABCDEFG), a block of trials presented exclusively the pair FG. Contrary to the expectation of associative models, the high prior rate of reward for F did not disrupt subsequent learning of the entire list...
March 23, 2017: Journal of Comparative Psychology
https://www.readbyqxmd.com/read/28332590/nicotine-enhances-alcohol-intake-and-dopaminergic-responses-through-%C3%AE-2-and-%C3%AE-4-nicotinic-acetylcholine-receptors
#18
Stefania Tolu, Fabio Marti, Carole Morel, Carole Perrier, Nicolas Torquet, Stephanie Pons, Renaud de Beaurepaire, Philippe Faure
Alcohol and nicotine are the most widely co-abused drugs. Both modify the activity of dopaminergic (DA) neurons of the Ventral Tegmental Area (VTA) and lead to an increase in DA release in the Nucleus Accumbens, thereby affecting the reward system. Evidences support the hypothesis that distinct nicotinic acetylcholine receptors (nAChRs), the molecular target of acetylcholine (ACh) and exogenous nicotine, are also in addition implicated in the response to alcohol. The precise molecular and neuronal substrates of this interaction are however not well understood...
March 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28332193/contrasting-social-and-cognitive-accounts-on-overimitation-the-role-of-causal-transparency-and-prior-experiences
#19
Hanna Schleihauf, Sabine Graetz, Sabina Pauen, Stefanie Hoehl
Three experiments (N = 100) examine the influence of causal information on overimitation. In Experiment 1, a transparent reward location reveals that the reward is unaffected by nonfunctional actions. When 5-year-olds observe an inefficient and subsequently an efficient strategy to retrieve a reward, they show overimitation in both phases-even though the reward is visible. In Experiment 2, children observe first the efficient then the inefficient strategy. The latter is always demonstrated communicatively, whereas the efficient strategy is presented communicatively (2a) or noncommunicatively (2b)...
March 23, 2017: Child Development
https://www.readbyqxmd.com/read/28332075/roux-en-y-gastric-bypass-following-nissen-fundoplication-higher-risk-same-reward
#20
Michael D Watson, J Hunter Mehaffey, Bruce D Schirmer, Peter T Hallowell
BACKGROUND: Roux-en-Y gastric bypass (RYGB) effectively treats obesity and gastroesophageal reflux disease (GERD). As more surgeons recommend RYGB to treat GERD in patients with obesity, there are concerns about this approach in patients with previous non-bariatric foregut surgery. This study aims to evaluate the effect of previous non-bariatric foregut surgery on subsequent RYGB. METHODS: Retrospective review of 2089 patients undergoing RYGB between January 1985 and June 2015 was conducted to identify all patients with previous non-bariatric foregut surgery...
March 22, 2017: Obesity Surgery
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