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https://www.readbyqxmd.com/read/29161539/home-is-where-the-future-is-the-brightfocus-foundation-consensus-panel-on-dementia-care
#1
Quincy M Samus, Constantine G Lyketsos, Betty Smith Black, Diane Bovenkamp, Michael Buckley, Christopher Callahan, Karen Davis, Laura N Gitlin, Nancy Hodgson, Deirdre Johnston, Helen C Kales, Michele Karel, John Jay Kenney, Shari M Ling, Maï Panchal, Melissa Reuland, Amber Willink
INTRODUCTION: A national consensus panel was convened to develop recommendations on future directions for home-based dementia care (HBDC). METHODS: The panel summarized advantages and challenges of shifting to HBDC as the nexus of care and developed consensus-based recommendations. RESULTS: The panel developed five core recommendations: (1) HBDC should be considered the nexus of new dementia models, from diagnosis to end of life in dementia; (2) new payment models are needed to support HBDC and reward integration of care; (3) a diverse new workforce that spans the care continuum should be prepared urgently; (4) new technologies to promote communication, monitoring/safety, and symptoms management must be tested, integrated, and deployed; and (5) targeted dissemination efforts for HBDC must be employed...
November 18, 2017: Alzheimer's & Dementia: the Journal of the Alzheimer's Association
https://www.readbyqxmd.com/read/29161356/medial-orbitofrontal-cortex-mediates-effort-related-responding-in-rats
#2
Alexandra Münster, Wolfgang Hauber
The medial orbitofrontal cortex (mOFC) is known to support flexible control of goal-directed behavior. However, limited evidence suggests that the mOFC also mediates the ability of organisms to work with vigor towards a selected goal, a hypothesis that received little consideration to date. Here we show that excitotoxic mOFC lesion increased responding under a progressive ratio (PR) schedule of reinforcement, that is, the highest ratio achieved, and increased the preference for the high effort-high reward option in an effort-related decision-making task, but left intact outcome-selective Pavlovian-instrumental transfer and outcome-specific devaluation...
November 17, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/29161340/prefrontal-executive-control-rescues-risk-for-anxiety-associated-with-high-threat-and-low-reward-brain-function
#3
Matthew A Scult, Annchen R Knodt, Spenser R Radtke, Bartholomew D Brigidi, Ahmad R Hariri
Compared with neural biomarkers of risk for mental illness, little is known about biomarkers of resilience. We explore if greater executive control-related prefrontal activity may function as a resilience biomarker by "rescuing" risk associated with higher threat-related amygdala and lower reward-related ventral striatum activity. Functional MRI was used to assay baseline threat-related amygdala, reward-related ventral striatum, and executive control-related prefrontal activity in 120 young adult volunteers...
November 17, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/29161228/homelessness-predicts-attrition-but-not-alcohol-abstinence-in-outpatients-experiencing-co-occurring-alcohol-dependence-and-serious-mental-illness
#4
Emily Leickly, Jordan Skalisky, Oladunni Oluwoye, Sterling M McPherson, Debra Srebnik, John M Roll, Richard K Ries, Michael G McDonell
BACKGROUND: Adults experiencing homelessness and serious mental illnesses (SMI) are at an increased risk for poor mental health and treatment outcomes compared to stably housed adults with SMI. The additional problem of alcohol misuse further complicates the difficulties of those living with homelessness and SMI. In this secondary data analysis, we investigated the impact of homelessness on attrition and alcohol use in a contingency management (CM) intervention that rewarded alcohol abstinence in outpatients with SMI...
November 21, 2017: Substance Abuse
https://www.readbyqxmd.com/read/29158771/implementation-and-evaluation-of-community-based-drop-in-centres-for-breastfeeding-support-in-victoria-australia
#5
Rhian L Cramer, Helen L McLachlan, Touran Shafiei, Lisa H Amir, Meabh Cullinane, Rhonda Small, Della A Forster
Background: While Australia has high breastfeeding initiation, there is a sharp decline in the first weeks postpartum and this continues throughout the first year. Supporting breastfeeding In Local Communities (SILC) was a three-arm cluster randomised controlled trial to determine whether early home-based breastfeeding support by a maternal and child health nurse (SILC-MCHN), with or without access to a community-based breastfeeding drop-in centre, increased the proportion of infants receiving any breast milk at three, four and six months...
2017: International Breastfeeding Journal
https://www.readbyqxmd.com/read/29158578/ketamine-and-its-metabolite-2r-6r-hydroxynorketamine-induce-lasting-alterations-in-glutamatergic-synaptic-plasticity-in-the-mesolimbic-circuit
#6
N Yao, O Skiteva, X Zhang, P Svenningsson, K Chergui
Low doses of ketamine trigger rapid and lasting antidepressant effects after one injection in treatment-resistant patients with major depressive disorder. Modulation of AMPA receptors (AMPARs) in the hippocampus and prefrontal cortex is suggested to mediate the antidepressant action of ketamine and of one of its metabolites (2R,6R)-hydroxynorketamine ((2R,6R)-HNK). We have examined whether ketamine and (2R,6R)-HNK affect glutamatergic transmission and plasticity in the mesolimbic system, brain regions known to have key roles in reward-motivated behaviors, mood and hedonic drive...
November 21, 2017: Molecular Psychiatry
https://www.readbyqxmd.com/read/29158537/medicinal-plant-leaf-extract-and-pure-flavonoid-mediated-green-synthesis-of-silver-nanoparticles-and-their-enhanced-antibacterial-property
#7
Siddhant Jain, Mohan Singh Mehata
The rewards of using plants and plant metabolites over other biological methods for nanoparticle synthesis have fascinated researchers to investigate mechanisms of metal ions uptake and bio-reduction by plants. Here, green chemistry were employed for the synthesis of silver nanoparticles (AgNPs) using leaf extracts of Ocimum Sanctum (Tulsi) and its derivative quercetin (flavonoid present in Tulsi) separately as precursors to investigate the role of biomolecules present in Tulsi in the formation of AgNPs from cationic silver under different physicochemical conditions such as pH, temperature, reaction time and reactants concentration...
November 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29158415/long-term-dopamine-neurochemical-monitoring-in-primates
#8
Helen N Schwerdt, Hideki Shimazu, Ken-Ichi Amemori, Satoko Amemori, Patrick L Tierney, Daniel J Gibson, Simon Hong, Tomoko Yoshida, Robert Langer, Michael J Cima, Ann M Graybiel
Many debilitating neuropsychiatric and neurodegenerative disorders are characterized by dopamine neurotransmitter dysregulation. Monitoring subsecond dopamine release accurately and for extended, clinically relevant timescales is a critical unmet need. Especially valuable has been the development of electrochemical fast-scan cyclic voltammetry implementing microsized carbon fiber probe implants to record fast millisecond changes in dopamine concentrations. Nevertheless, these well-established methods have only been applied in primates with acutely (few hours) implanted sensors...
November 20, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29158387/retrograde-inhibition-by-a-specific-subset-of-interpeduncular-%C3%AE-5-nicotinic-neurons-regulates-nicotine-preference
#9
Jessica L Ables, Andreas Görlich, Beatriz Antolin-Fontes, Cuidong Wang, Sylvia M Lipford, Michael H Riad, Jing Ren, Fei Hu, Minmin Luo, Paul J Kenny, Nathaniel Heintz, Ines Ibañez-Tallon
Repeated exposure to drugs of abuse can produce adaptive changes that lead to the establishment of dependence. It has been shown that allelic variation in the α5 nicotinic acetylcholine receptor (nAChR) gene CHRNA5 is associated with higher risk of tobacco dependence. In the brain, α5-containing nAChRs are expressed at very high levels in the interpeduncular nucleus (IPN). Here we identified two nonoverlapping α5 (+) cell populations (α5- (Amigo1) and α5- (Epyc) ) in mouse IPN that respond differentially to nicotine...
November 20, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29158027/a-conditioned-reinforcer-did-not-help-to-maintain-an-operant-conditioning-in-the-absence-of-a-primary-reinforcer-in-horses
#10
Léa Lansade, Ludovic Calandreau
The use of conditioned reinforcers is increasingly promoted in animal training. Surprisingly, the efficiency of their use remains to be demonstrated in horses. This study aimed to determine whether an auditory signal which had previously been associated with a food reward 288 times could be used as a conditioned reinforcer to replace the primary reinforcer in an unrelated operant conditioning procedure. Fourteen horses were divided into two groups of 7: No Reinforcement (NR) and Conditioned Reinforcement (CR)...
November 17, 2017: Behavioural Processes
https://www.readbyqxmd.com/read/29157983/blockade-of-nmda-receptors-blocks-the-acquisition-of-cocaine-conditioned-approach-in-rats
#11
Ewa Galaj, Neal Seepersad, Zena Dakmak, Robert Ranaldi
Conditioned stimuli (CSs) exert motivational effects on both adaptive and pathological reward-related behaviors, including drug taking and seeking. We developed a paradigm that allows us to investigate the neuropharmacology by which previously neutral stimuli acquire the capacity to function as CSs and elicit (intravenous) cocaine conditioned approach and used this paradigm to test the role of NMDA receptor stimulation in the acquisition of cocaine conditioned approach. Rats were injected systemically with the NMDA receptor antagonist, MK-801, before the start of 4 consecutive conditioning sessions, each of which consisted of 20 randomly presented light/tone (CS) presentations paired with cocaine infusion contingent upon nose pokes...
November 17, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/29157751/preliminary-evidence-that-digit-length-ratio-2d-4d-predicts-neural-response-to-delivery-of-motivational-stimuli
#12
Troy A Webber, Heather E Soder, Geoffrey F Potts, Marina A Bornovalova
Reduced relative length of the 2nd to 4th digits (2D:4D) is thought to partially reflect fetal testosterone (FT) exposure, a process suspected to promote relatively permanent effects on the brain and behavior via structural and functional neuroadaptations. We examined the effect of 2D:4D on neural response - assessed by P2a and feedback-related negativity (FRN) event-related potentials (ERPs) - to motivational stimuli (reward or punishment) using two counterbalanced conditions of a passive S1/S2 outcome prediction design...
November 17, 2017: Biological Psychology
https://www.readbyqxmd.com/read/29157488/l%C3%A2-hypophyse-et-ses-traitements-comment-peuvent-ils-influer-sur-le-comportement-the-pituitary-and-its-treatments-how-can-they-influence-behaviour
#13
C Mouly, F Borson-Chazot, P Caron
Behaviour may be influenced by pituitary hormones or treatments. Dopamine agonist (DA) indicated in prolactinomas treatment can cause side effects, and especially impulse control disorders. In the context of prolactinomas treatment, impulse control disorders (ICD) have been reported like gambling, compulsive shopping, but mostly hypersexuality. These ICD can occur with low AD doses, and seem to be independent of type of molecule and psychiatric medical history. The main pathophysiologic hypothesis is a dysregulation of dopaminergic pathway involved in reward system...
October 2017: Annales D'endocrinologie
https://www.readbyqxmd.com/read/29157328/peer-effects-on-self-regulation-in-adolescence-depend-on-the-nature-and-quality-of-the-peer-interaction
#14
Kevin M King, Katie A McLaughlin, Jennifer Silk, Kathryn C Monahan
Adolescence is a critical period for the development of self-regulation, and peer interactions are thought to strongly influence regulation ability. Simple exposure to peers has been found to alter decisions about risky behaviors and increase sensitivity to rewards. The link between peer exposure and self-regulation is likely to vary as a function of the type and quality of peer interaction (e.g., rejection or acceptance). Little is known about how the nature of interactions with peers influences different dimensions of self-regulation...
November 21, 2017: Development and Psychopathology
https://www.readbyqxmd.com/read/29156368/self-and-team-prioritisation-effects-in-perceptual-matching-evidence-for-a-shared-representation
#15
Florence Enock, Jie Sui, Miles Hewstone, Glyn W Humphreys
Previous research has demonstrated that in-group favouritism occurs not only in higher-level judgments such as reward allocation, but also in low-level perceptual and attentional tasks. Recently, Moradi, Sui, Hewstone, and Humphreys (2015) found a novel effect of in-group bias on a simple perceptual matching task in which football fans responded more efficiently to stimuli newly associated with their own football team than stimuli associated with rival or neutral teams. This result is consistent with a robust self-bias effect in which individuals show a large performance advantage in responding to stimuli associated with the self over stimuli associated with a close friend or a stranger (Sui, He, & Humphreys, 2012)...
November 17, 2017: Acta Psychologica
https://www.readbyqxmd.com/read/29155278/mecp2-expression-in-a-rat-model-of-risky-decision-making
#16
Jay V Deng, Caitlin A Orsini, Kristy G Shimp, Barry Setlow
Many neuropsychiatric disorders are associated with abnormal decision making involving risk of punishment, but the underlying molecular basis remains poorly understood. Methyl CpG-binding Protein 2 (MeCP2) is an epigenetic factor that regulates transcription by directly binding to methylated DNA. Here, we evaluated MeCP2 expression in the context of risk-taking behaviors using the Risky Decision-making Task (RDT), in which rats make discrete choices between a small "safe" food reward and a large "risky" food reward accompanied by varying probabilities of punishment...
November 16, 2017: Neuroscience
https://www.readbyqxmd.com/read/29154804/event-related-brain-potentials-and-the-study-of-reward-processing-methodological-considerations
#17
REVIEW
Olave E Krigolson
There is growing interest in using electroencephalography and specifically the event-related brain potential (ERP) methodology to study human reward processing. Since the discovery of the feedback related negativity (Miltner et al., 1997) and the development of theories associating the feedback related negativity and more recently the reward positivity with reinforcement learning, midbrain dopamine function, and the anterior cingulate cortex (i.e., Holroyd and Coles, 2002) researchers have used the ERP methodology to probe the neural basis of reward learning in humans...
November 14, 2017: International Journal of Psychophysiology
https://www.readbyqxmd.com/read/29154644/a-longitudinal-analysis-of-adolescent-decision-making-with-the-iowa-gambling-task
#18
Brandon Almy, Michael Kuskowski, Stephen M Malone, Evan Myers, Monica Luciana
Many researchers have used the standard Iowa Gambling Task (IGT) to assess decision-making in adolescence given increased risk-taking during this developmental period. Most studies are cross-sectional and do not observe behavioral trajectories over time, limiting interpretation. This longitudinal study investigated healthy adolescents' and young adults' IGT performance across a 10-year span. A total of 189 individuals (aged 9-23 at baseline) completed a baseline session and were followed at 2-year intervals yielding 5 time-points...
November 20, 2017: Developmental Psychology
https://www.readbyqxmd.com/read/29154368/precision-medicine-in-alcohol-dependence-a-controlled-trial-testing-pharmacotherapy-response-among-reward-and-relief-drinking-phenotypes
#19
Karl Mann, Corey R Roos, Sabine Hoffmann, Helmut Nakovics, Tagrid Leménager, Andreas Heinz, Katie Witkiewitz
Randomized trials of medications for alcohol dependence (AD) often report no differences between active medications. Few studies in AD have tested hypotheses regarding which medication will work best for which patients (ie, precision medicine). The PREDICT Study tested acamprosate and naltrexone versus placebo in 426 randomly assigned AD patients in a 3-month treatment. PREDICT proposed individuals whose drinking was driven by positive reinforcement (ie, reward drinkers) would have a better treatment response to naltrexone, whereas individuals whose drinking was driven by negative reinforcement (ie, relief drinkers) would have a better treatment response to acamprosate...
November 20, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29153928/enhancing-excitability-of-dopamine-neurons-promotes-motivational-behaviour-through-increased-action-initiation
#20
Linde Boekhoudt, Ellen C Wijbrans, Jodie H K Man, Mieneke C M Luijendijk, Johannes W de Jong, Geoffrey van der Plasse, Louk J M J Vanderschuren, Roger A H Adan
Motivational deficits are a key symptom in multiple psychiatric disorders, including major depressive disorder, schizophrenia and addiction. A likely neural substrate for these motivational deficits is the brain dopamine (DA) system. In particular, DA signalling in the nucleus accumbens, which originates from DA neurons in the ventral tegmental area (VTA), has been identified as a crucial substrate for effort-related and activational aspects of motivation. Unravelling how VTA DA neuronal activity relates to motivational behaviours is required to understand how motivational deficits in psychiatry can be specifically targeted...
November 16, 2017: European Neuropsychopharmacology: the Journal of the European College of Neuropsychopharmacology
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