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Motivational states and learning

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https://www.readbyqxmd.com/read/28106670/reward-motivation-and-emotion-of-pain-and-its-relief
#1
Frank Porreca, Edita Navratilova
The experience of pain depends on interpretation of context and past experience that guide the choice of an immediate behavioral response and influence future decisions of actions to avoid harm. The aversive qualities of pain underlie its physiological role in learning and motivation. In this review, we highlight findings from human and animal investigations that suggest that both pain, and the relief of pain, are complex emotions that are comprised of feelings and their motivational consequences. Relief of aversive states, including pain, is rewarding...
January 12, 2017: Pain
https://www.readbyqxmd.com/read/28092510/unobtrusive-and-wearable-systems-for-automatic-dietary-monitoring
#2
Temiloluwa Prioleau, Elliot Moore, Maysam Ghovanloo
The threat of obesity, diabetes, anorexia and bulimia in our society today has motivated extensive research on dietary monitoring. Standard self-report methods such as 24-hour recall and food frequency questionnaires are expensive, burdensome and unrealiable to handle the growing health crisis. Long-term activity monitoring in daily living is a promising approach to provide individuals with quantitative feedback that can encourage healthier habits. Although several studies have attempted automating dietary monitoring using wearable, hand-held, smartobject, and environmental systems, it remains an open research problem...
January 16, 2017: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/28088350/the-emotive-nature-of-conflict-monitoring-in-the-medial-prefrontal-cortex
#3
Blair Saunders, Hause Lin, Marina Milyavskaya, Michael Inzlicht
The detection of conflict between incompatible impulses, thoughts, and actions is a ubiquitous source of motivation across theories of goal-directed action. In this overview, we explore the hypothesis that conflict is emotive, integrating perspectives from affective science and cognitive neuroscience. Initially, we review evidence suggesting that the mental and biological processes that monitor for information processing conflict-particularly those generated by the anterior midcingulate cortex-track the affective significance of conflict and use this signal to motivate increased control...
January 11, 2017: International Journal of Psychophysiology
https://www.readbyqxmd.com/read/28080126/know-thy-enemy-education-about-terrorism-improves-social-attitudes-toward-terrorists
#4
Jordan Theriault, Peter Krause, Liane Young
Hatred of terrorists is an obstacle to the implementation of effective counterterrorism policies-it invites indiscriminate retaliation, whereas many of the greatest successes in counterterrorism have come from understanding terrorists' personal and political motivations. Drawing from psychological research, traditional prejudice reduction strategies are generally not well suited to the task of reducing hatred of terrorists. Instead, in 2 studies, we explored education's potential ability to reduce extreme negative attitudes toward terrorists...
January 12, 2017: Journal of Experimental Psychology. General
https://www.readbyqxmd.com/read/28076866/biophysically-motivated-regulatory-network-inference-progress-and-prospects
#5
Tarmo Äijö, Richard Bonneau
Thanks to the confluence of genomic technology and computational developments, the possibility of network inference methods that automatically learn large comprehensive models of cellular regulation is closer than ever. This perspective focuses on enumerating the elements of computational strategies that, when coupled to appropriate experimental designs, can lead to accurate large-scale models of chromatin state and transcriptional regulatory structure and dynamics. We highlight 4 research questions that require further investigation in order to make progress in network inference: (1) using overall constraints on network structure such as sparsity, (2) use of informative priors and data integration to constrain individual model parameters, (3) estimation of latent regulatory factor activity under varying cell conditions, and (4) new methods for learning and modeling regulatory factor interactions...
2016: Human Heredity
https://www.readbyqxmd.com/read/28065844/effects-of-the-chronic-restraint-stress-induced-depression-on-reward-related-learning-in-rats
#6
Pan Xu, Kezhu Wang, Cong Lu, Liming Dong, Yixi Chen, Qiong Wang, Zhe Shi, Yanyan Yang, Shanguang Chen, Xinmin Liu
Chronic mild or unpredictability stress produces a persistent depressive-like state. The main symptoms of depression include weight loss, despair, anhedonia, diminished motivation and mild cognition impairment, which could influence the ability of reward-related learning. In the present study, we aimed to evaluate the effects of chronic restraint stress on the performance of reward-related learning of rats. We used the exposure of repeated restraint stress (6h/day, for 28days) to induce depression-like behavior in rats...
January 5, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28060525/diurnal-rhythms-in-psychological-reward-functioning-in-healthy-young-men-wanting-liking-and-learning
#7
Jamie E M Byrne, Greg Murray
A range of evidence suggests that human reward functioning is partly driven by the endogenous circadian system, generating 24-hour rhythms in behavioural measures of reward activation. Reward functioning is multifaceted but literature to date is largely limited to measures of self-reported positive mood states. The aim of this study was to advance the field by testing for hypothesised diurnal variation in previously unexplored components of psychological reward: 'wanting', liking, and learning using subjective and behavioural measures...
January 6, 2017: Chronobiology International
https://www.readbyqxmd.com/read/28017470/a-central-amygdala-crf-circuit-facilitates-learning-about-weak-threats
#8
Christina A Sanford, Marta E Soden, Madison A Baird, Samara M Miller, Jay Schulkin, Richard D Palmiter, Michael Clark, Larry S Zweifel
Fear is a graded central motive state ranging from mild to intense. As threat intensity increases, fear transitions from discriminative to generalized. The circuit mechanisms that process threats of different intensity are not well resolved. Here, we isolate a unique population of locally projecting neurons in the central nucleus of the amygdala (CeA) that produce the neuropeptide corticotropin-releasing factor (CRF). CRF-producing neurons and CRF in the CeA are required for discriminative fear, but both are dispensable for generalized fear at high US intensities...
January 4, 2017: Neuron
https://www.readbyqxmd.com/read/27986377/vocal-fry-use-in-adult-female-speakers-exposed-to-two-languages
#9
Todd A Gibson, Connie Summers, Sydney Walls
OBJECTIVE: Several studies have identified the widespread use of vocal fry among American women. Popular explanations for this phenomenon appeal to sociolinguistic purposes that likely take significant time for second language users to learn. The objective of this study was to determine if mere exposure to this vocal register, as opposed to nuanced sociolinguistic motivations, might explain its widespread use. STUDY DESIGN: This study used multigroup within- and between-subjects design...
December 13, 2016: Journal of Voice: Official Journal of the Voice Foundation
https://www.readbyqxmd.com/read/27959821/class-specific-subspace-kernel-representations-and-adaptive-margin-slack-minimization-for-large-scale-classification
#10
Yinan Yu, Konstantinos I Diamantaras, Tomas McKelvey, Sun-Yuan Kung
In kernel-based classification models, given limited computational power and storage capacity, operations over the full kernel matrix becomes prohibitive. In this paper, we propose a new supervised learning framework using kernel models for sequential data processing. The framework is based on two components that both aim at enhancing the classification capability with a subset selection scheme. The first part is a subspace projection technique in the reproducing kernel Hilbert space using a CLAss-specific Subspace Kernel representation for kernel approximation...
December 7, 2016: IEEE Transactions on Neural Networks and Learning Systems
https://www.readbyqxmd.com/read/27928508/a-perspective-on-physiological-studies-supporting-the-provision-of-scientific-advice-for-the-management-of-fraser-river-sockeye-salmon-oncorhynchus-nerka
#11
REVIEW
David A Patterson, Steven J Cooke, Scott G Hinch, Kendra A Robinson, Nathan Young, Anthony P Farrell, Kristina M Miller
The inability of physiologists to effect change in fisheries management has been the source of frustration for many decades. Close collaboration between fisheries managers and researchers has afforded our interdisciplinary team an unusual opportunity to evaluate the emerging impact that physiology can have in providing relevant and credible scientific advice to assist in management decisions. We categorize the quality of scientific advice given to management into five levels based on the type of scientific activity and resulting advice (notions, observations, descriptions, predictions and prescriptions)...
2016: Conservation Physiology
https://www.readbyqxmd.com/read/27926446/how-motivation-and-reward-learning-modulate-selective-attention
#12
A Bourgeois, L Chelazzi, P Vuilleumier
Motivational stimuli such as rewards elicit adaptive responses and influence various cognitive functions. Notably, increasing evidence suggests that stimuli with particular motivational values can strongly shape perception and attention. These effects resemble both selective top-down and stimulus-driven attentional orienting, as they depend on internal states but arise without conscious will, yet they seem to reflect attentional systems that are functionally and anatomically distinct from those classically associated with frontoparietal cortical networks in the brain...
2016: Progress in Brain Research
https://www.readbyqxmd.com/read/27926442/intrinsic-motivation-curiosity-and-learning-theory-and-applications-in-educational-technologies
#13
P-Y Oudeyer, J Gottlieb, M Lopes
This chapter studies the bidirectional causal interactions between curiosity and learning and discusses how understanding these interactions can be leveraged in educational technology applications. First, we review recent results showing how state curiosity, and more generally the experience of novelty and surprise, can enhance learning and memory retention. Then, we discuss how psychology and neuroscience have conceptualized curiosity and intrinsic motivation, studying how the brain can be intrinsically rewarded by novelty, complexity, or other measures of information...
2016: Progress in Brain Research
https://www.readbyqxmd.com/read/27926382/prediction-of-anti-cancer-drug-response-by-kernelized-multi-task-learning
#14
Mehmet Tan
MOTIVATION: Chemotherapy or targeted therapy are two of the main treatment options for many types of cancer. Due to the heterogeneous nature of cancer, the success of the therapeutic agents differs among patients. In this sense, determination of chemotherapeutic response of the malign cells is essential for establishing a personalized treatment protocol and designing new drugs. With the recent technological advances in producing large amounts of pharmacogenomic data, in silico methods have become important tools to achieve this aim...
October 2016: Artificial Intelligence in Medicine
https://www.readbyqxmd.com/read/27922596/pathological-overeating-emerging-evidence-for-a-compulsivity-construct
#15
REVIEW
Catherine F Moore, Valentina Sabino, George F Koob, Pietro Cottone
Compulsive eating behavior is a transdiagnostic construct that is characteristic of medical and psychiatric conditions such as forms of obesity and eating disorders. While feeding research is moving towards a better understanding of the proposed addictive properties of food, the components and the mechanisms contributing to compulsive eating are not yet clearly defined or understood. Current understanding highlights three elements of compulsive behavior as it applies to pathological overeating: 1) habitual overeating; 2) overeating to relieve a negative emotional state; and 3) overeating despite aversive consequences...
December 6, 2016: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/27916665/task-modulations-and-clinical-manifestations-in-the-brain-functional-connectome-in-1615-fmri-datasets
#16
Tobias Kaufmann, Dag Alnæs, Christine Lycke Brandt, Nhat Trung Doan, Karolina Kauppi, Francesco Bettella, Trine V Lagerberg, Akiah O Berg, Srdjan Djurovic, Ingrid Agartz, Ingrid S Melle, Torill Ueland, Ole A Andreassen, Lars T Westlye
OBJECTIVE: An abundance of experimental studies have motivated a range of models concerning the cognitive underpinnings of severe mental disorders, yet the conception that cognitive and brain dysfunction is confined to specific cognitive domains and contexts has limited ecological validity. Schizophrenia and bipolar spectrum disorders have been conceptualized as disorders of brain connectivity; yet little is known about the pervasiveness across cognitive tasks. METHODS: To address this outstanding issue of context specificity, we estimated functional network connectivity from fMRI data obtained during five cognitive tasks (0-back, 2-back, go/no-go, recognition of positive faces, negative faces) in 90 patients with schizophrenia spectrum, 97 patients with bipolar spectrum disorder, and 136 healthy controls, including 1615 fMRI datasets in total...
December 1, 2016: NeuroImage
https://www.readbyqxmd.com/read/27884551/resting-state-abnormalities-in-heroin-dependent-individuals
#17
REVIEW
Niki Pandria, Leda Kovatsi, Ana B Vivas, Panagiotis D Bamidis
Drug addiction is a major health problem worldwide. Recent neuroimaging studies have shed light into the underlying mechanisms of drug addiction as well as its consequences to the human brain. The most vulnerable, to heroin addiction, brain regions have been reported to be specific prefrontal, parietal, occipital, and temporal regions, as well as, some subcortical regions. The brain regions involved are usually linked with reward, motivation/drive, memory/learning, inhibition as well as emotional control and seem to form circuits that interact with each other...
November 21, 2016: Neuroscience
https://www.readbyqxmd.com/read/27881123/reflective-practice-and-its-role-in-facilitating-creative-responses-to-dilemmas-within-clinical-communication-a-qualitative-analysis
#18
Gabriele Lutz, Gudrun Roling, Bettina Berger, Friedrich Edelhäuser, Christian Scheffer
BACKGROUND: Good communication is a major factor in delivering high quality in care. Research indicates that current communication skills training alone might not sufficiently enable students to find context-specific creative solutions to individual complex personal and interpersonal challenges in the clinical context. This study explores medical students' experiences with real communication dilemmas in a facilitated group setting. The aims were to gain a better understanding of whether and, if so, how reflective practice can enhance students' ability to find creative individual solutions in difficult communication situations and to identify factors within the reflective setting that foster their creative competency...
November 24, 2016: BMC Medical Education
https://www.readbyqxmd.com/read/27837333/individual-differences-in-food-cue-responsivity-are-associated-with-acute-and-repeated-cocaine-induced-vocalizations-but-not-cue-induced-vocalizations
#19
Jordan A Tripi, Micheal L Dent, Paul J Meyer
RATIONALE: Individuals prone to attribute incentive salience to food-associated stimuli ("cues") are also more sensitive to cues during drug seeking and drug taking. This may be due in part to a difference in sensitivity to the affective or other stimulus properties of the drug. In rats, these properties are associated with 50-kHz ultrasonic vocalizations (USVs), in that they are elicited during putative positive affective and motivational states, including in response to drugs of abuse...
February 2017: Psychopharmacology
https://www.readbyqxmd.com/read/27803652/goal-directed-behavior-and-instrumental-devaluation-a-neural-system-level-computational-model
#20
Francesco Mannella, Marco Mirolli, Gianluca Baldassarre
Devaluation is the key experimental paradigm used to demonstrate the presence of instrumental behaviors guided by goals in mammals. We propose a neural system-level computational model to address the question of which brain mechanisms allow the current value of rewards to control instrumental actions. The model pivots on and shows the computational soundness of the hypothesis for which the internal representation of instrumental manipulanda (e.g., levers) activate the representation of rewards (or "action-outcomes", e...
2016: Frontiers in Behavioral Neuroscience
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