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Dissertations / Theses on the topic 'Reward Processing'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Manohar, S. G. "Frontostriatal contributions to reward processing." Thesis, University College London (University of London), 2015. http://discovery.ucl.ac.uk/1470430/.

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Dopaminergic projections to striatum and prefrontal cortex are thought to signal rewards, thereby energising movement, facilitating learning, and motivating effort. Extensive evidence links reward to attention and to dopamine. However a direct characterisation of how dopamine influences reward sensitivity in humans is lacking. This thesis examines the effects of dopamine and reward on eye movements. First, I introduced incentive manipulations into an “oculomotor capture” task, in which involuntary saccades are generated towards salient distractors. Whereas rewards increased both speed and accu

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2

Crawford, Bonni. "Social reward and threat processing." Thesis, Cardiff University, 2015. http://orca.cf.ac.uk/90984/.

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The aim of this project was to investigate the relationships between individual differences in social expectancies and motivation, and how these relate to broader personality traits and to social integration outcomes such as individuals’ sense of belonging. A cognitive model of social motivation and reactivity to social feedback was proposed. In this model, generalised expectancies are considered to play a pivotal role in motivating human social behaviour. Two novel measures were developed: the levels of dispositional expectancies of social threat and reward scale (the LODESTARS) and a task-ba

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3

Nymberg, Charlotte. "The neurobiology of reward processing in adolescence." Thesis, King's College London (University of London), 2013. https://kclpure.kcl.ac.uk/portal/en/theses/the-neurobiology-of-reward-processing-in-adolescence(e9ad0c43-b66b-4336-801d-d63c1b475914).html.

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Adolescence represents a time in development when the reward system undergoes substantial changes. Several studies suggest differences in reward processing amongst adolescents compared to adults and children. Abnormalities in reward processing also underlie many psychiatric disorders, such as attention deficit hyperactivity disorder (ADHD). The present research has the following objectives: 1) to investigate normal reward processing during reward anticipation and reward feedback in a large population based cohort of old adolescents. 2) to explore gender differences in reward processing and det

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4

Cowdrey, Felicity Ann. "Rumination and reward processing in anorexia nervosa." Thesis, University of Oxford, 2012. http://ora.ox.ac.uk/objects/uuid:1d86eb13-7d41-40ef-a347-6480ebfefeb2.

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Anorexia nervosa (AN) is an eating disorder characterised by severe emaciation due deliberate restriction of food intake and an intense fear of gaining weight. Theoretical accounts of AN have to date focused predominately on cognitive elements of the disorder, yet resulting treatments have been inadequate and outcome for AN remains poor. Understanding the processes that maintain the disorder is an important step in developing effective strategies to augment existing treatments. With this in mind, the question arises: what processes drive AN? Novel frameworks for AN suggest that particular info

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5

McGraw, Justin James. "Reward processing alterations for natural reward in alcohol-preferring (P) rats: Incentive contrast, reward discrimination, and alcohol consumption." Bowling Green State University / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1526310548842931.

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6

Morgan, Joanne E. "Antisocial behaviour in adolescence : the role of reward processing." Thesis, Cardiff University, 2012. http://orca.cf.ac.uk/44838/.

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Rewards are fundamental in directing our behaviour, yet maladaptive reward processing can lead to risky and impaired decision making. The nature of reward processing in individuals who display antisocial behaviour is poorly understood, particularly in adolescents. The present thesis examined reward processing in young male offenders involved in the criminal justice system. A multi-method approach to the examination of reward was adopted, using personality, neuropsychological and psychophysiological approaches. The heterogeneity of antisocial behaviour was explored by using self-report and offi

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7

Berghorst, Lisa Hinckley. "Examining the Relationships between Stress, Reward Processing, and Bipolar Disorder." Thesis, Harvard University, 2012. http://dissertations.umi.com/gsas.harvard:10479.

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Bipolar disorder (BD) is a prevalent illness associated with severe impairments in functioning and elusive etiological pathways. Although a strong link between negative life stress and the onset of mood episodes in BD has been documented, the mechanisms underlying this connection remain unclear. A dysregulated reward system may play a prominent role in bridging these phenomena given that anhedonia and hyperhedonia are often symptoms of BD. Furthermore, emerging research suggests that negative stress influences reward responsiveness and the neurobiological substrates that regulate this system.

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8

García-García, Isabel, Annette Horstmann, María Angeles Jurado, et al. "Reward processing in obesity, substance addiction and non-substance addiction." Universitätsbibliothek Leipzig, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-196512.

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Similarities and differences between obesity and addiction are a prominent topic of ongoing research. We conducted an activation likelihood estimation meta-analysis on 87 studies in order to map the functional magnetic resonance imaging (fMRI) response to reward in participants with obesity, substance addiction and non-substance (or behavioural) addiction, and to identify commonalities and differences between them. Our study confirms the existence of alterations during reward processing in obesity, non-substance addiction and substance addiction. Specifically, participants with obesity or with

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9

García-García, Isabel, Annette Horstmann, María Angeles Jurado, et al. "Reward processing in obesity, substance addiction and non-substance addiction." Obesity reviews 2014, 11: 853 - 869, 2014. https://ul.qucosa.de/id/qucosa%3A14428.

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Similarities and differences between obesity and addiction are a prominent topic of ongoing research. We conducted an activation likelihood estimation meta-analysis on 87 studies in order to map the functional magnetic resonance imaging (fMRI) response to reward in participants with obesity, substance addiction and non-substance (or behavioural) addiction, and to identify commonalities and differences between them. Our study confirms the existence of alterations during reward processing in obesity, non-substance addiction and substance addiction. Specifically, participants with obesity or with

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10

Häusler, Alexander Niklas [Verfasser]. "Neuroeconomic Foundations of Reward, Loss, and Risk Processing / Alexander Niklas Häusler." Bonn : Universitäts- und Landesbibliothek Bonn, 2019. http://d-nb.info/1179184475/34.

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11

Baines, Stephanie. "The modulation of information processing by reward expectation and spatial attention." Thesis, University of Oxford, 2010. http://ora.ox.ac.uk/objects/uuid:1ea37eb4-6c3a-4000-8fdb-7d5de7a34e55.

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Reward expectation and spatial attention both exert powerful control over behaviour and modulate neural activity. The experiments in this thesis aimed to chart the dynamics of reward expectation effects across the time course of information processing and examine the relationship between reward and attention. Experiments 3.1 and 3.2 parametrically manipulated reward magnitude in the presence or absence of attention and demonstrated reward could influence reaction time (RT) under conditions of time pressure. Experiments 4.1 and 4.2 independently varied reward and spatial probabilities and illus

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12

Boehm, I., J. A. King, F. Bernardoni, et al. "Subliminal and supraliminal processing of reward-related stimuli in anorexia nervosa." Cambridge University Press, 2017. https://tud.qucosa.de/id/qucosa%3A70754.

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Background. Previous studies have highlighted the role of the brain reward and cognitive control systems in the etiology of anorexia nervosa (AN). In an attempt to disentangle the relative contribution of these systems to the disorder, we used functional magnetic resonance imaging (fMRI) to investigate hemodynamic responses to reward-related stimuli presented both subliminally and supraliminally in acutely underweight AN patients and age-matched healthy controls (HC). Methods. fMRI data were collected from a total of 35 AN patients and 35 HC, while they passively viewed subliminally and supral

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13

Tye, Kay M. "Amygdala processing of the formation and retrieval of cue-reward associations." Diss., Search in ProQuest Dissertations & Theses. UC Only, 2008. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3324587.

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14

Goerendt, Ines Katharina. "Reward processing in Parkinson's disease : adaptation in neural circuitries and neural systems." Thesis, Imperial College London, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.396317.

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15

Cambridge, Victoria Charlotte. "Reward processing in health harming behaviour : neural and behavioural responding in obesity." Thesis, University of Cambridge, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.648295.

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16

Zaugg, Kelsey K. "Do Shape and Volume of Subcortical Neural Structures Involved in Reward Processing Correlate with Body Mass and Food Reward in Adolescent Females?" BYU ScholarsArchive, 2020. https://scholarsarchive.byu.edu/etd/9023.

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Background: The prevalence of adolescent obesity has increased drastically in the last few decades, spurring research examining causes and consequences of this chronic health condition. Neuroimaging techniques are being used to determine possible neural correlates of obesity that could help inform research in this field. However, the research among adolescents is not as abundant and findings so far are contradictory. This study sought to examine the association of the shape and volume of subcortical brain structures involved in reward processing with weight status in adolescent females. Additi

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Bothe, Nina [Verfasser]. "Acute exercise influences reward processing in highly trained and untrained men / Nina Bothe." Berlin : Medizinische Fakultät Charité - Universitätsmedizin Berlin, 2013. http://d-nb.info/1042940533/34.

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18

Christie, Gregory J., and University of Lethbridge Faculty of Arts and Science. "Electrophysiological indices of feedback processing." Thesis, Lethbridge, Alta. : University of Lethbridge, Dept. of Neuroscience, 2010, 2010. http://hdl.handle.net/10133/2551.

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All sentient organisms use contextual information to assess the amount of reward associated with a particular behavior. Human beings have arguably evolved the most sophisticated of these mechanisms and are capable of integrating information over a long duration of time to accurately assess the expected outcome of a chosen action. This thesis used electroencephalography (EEG) to measure how the human brain processes rewarding and punishing feedback in a gambling-type game with variable risk and reward. Experiment 1 determined that phase-locked (evoked) and non-phase-locked (induced) electroence

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19

Pechtel, Pia. "Reward processing and high-risk behaviour in adolescents with a history of childhood abuse." Thesis, University of Exeter, 2016. http://hdl.handle.net/10871/23447.

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Objective: Childhood abuse (CA) is commonly associated with increased frequency of high-risk behaviours (HRB) in adolescence. Similarly, research has highlighted links between CA and blunted responses to reward. To date, little attention has been devoted to examine if altered reward processes may also be linked to increased engagement in HRB. To explore this hypothesis, this systematic review collated research that investigated the relationship among CA, reward processes and HRB. Specifically, the review addressed the question: Are HRB associated with altered reward processes in children and a

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Low, L. A. "The effect of repeated early injury on reward-related processing in the adult rat." Thesis, University College London (University of London), 2010. http://discovery.ucl.ac.uk/20236/.

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Pain during early life can affect the developing central nervous system, leading to altered neural function in the adult organism. In this thesis, I investigate the long-term effects of repeated early pain on reward-related processing in the adult rat. I hypothesised that the reward system was likely to be sensitive to early activation of pain pathways, as the brain systems involved in both pain and reward overlap extensively, and virtually all centrally acting analgesic drugs are also drugs of reward. To begin, I investigate the extent to which the developing reward system is activated by a c

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21

Mason, Liam. "Characterising the neural mechanisms of reward processing in bipolar disorder using EEG and fMRI." Thesis, University of Manchester, 2012. https://www.research.manchester.ac.uk/portal/en/theses/characterising-the-neural-mechanisms-of-reward-processing-in-bipolar-disorder-using-eeg-and-fmri(7878fa13-8bc0-4aa3-b5f6-4331d4953a20).html.

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One of the key features of bipolar disorder (BD) is risky and impulsive decision-making, behaviours theorised to arise from dysregulation in a biobehavioural system governing approach of rewards. However the neural mechanisms of this conceptual model have not been well specified, and there remains a gap between this model and key clinical phenomena such as mixed episodes. This thesis takes a neuroeconomics and reinforcement learning approach to characterise the neural mechanisms of motivational decision-making in BD. A review of the neurobiological evidence for reward dysregulation in BD (Chap

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22

Yousuf, Mushfa [Verfasser]. "Neural processing of food stimuli : Influence of reward, homeostasis, habit, and attention / Mushfa Yousuf." Lübeck : Zentrale Hochschulbibliothek Lübeck, 2020. http://d-nb.info/1206389001/34.

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23

DEVOTO, FRANCANTONIO. "Motivation gone awry: investigations on aberrant reward processing in obesity and substance use disorder." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2021. http://hdl.handle.net/10281/309806.

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L’obesità e il Disturbo da Uso di Sostanze (DUS) sono disturbi caratterizzati da ricadute croniche e dal desiderio incontrollabile di consumare la sostanza, o craving. La letteratura scientifica suggerisce che il craving può essere elicitato dall’esposizione ai cue e che le moderne tecniche non invasive di stimolazione cerebrale possono essere utilizzate per contrastarlo. Tuttavia, alcuni elementi che non sono stati sufficientemente esaminati dalla letteratura scientifica sull’argomento: (i) l’influenza di diversi fattori, interni ed esterni, sulle risposte neurali agli stimoli di cibo o droga

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24

Gleich, Tobias [Verfasser]. "The significance of dopamine and glutamate for neuronal reward processing over the lifespan / Tobias Gleich." Berlin : Medizinische Fakultät Charité - Universitätsmedizin Berlin, 2016. http://d-nb.info/1082237469/34.

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Lernbass, Birgit [Verfasser]. "Cigarette smoking reduces medication-associated deficits in reward processing in patients with schizophrenia / Birgit Lernbass." Ulm : Universität Ulm. Medizinische Fakultät, 2013. http://d-nb.info/1030316309/34.

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Walsh, Annabel. "Manipulating dopaminergic activity with bupropion : effects on reward and emotional processing biases implicated in depression." Thesis, University of Oxford, 2016. https://ora.ox.ac.uk/objects/uuid:08372a77-bc23-42f9-be4e-2f0511124cdf.

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Major depressive disorder is characterised by two core diagnostic symptoms, low mood and anhedonia, which have been suggested to be caused by negative biases in emotional processing and aberrant reward processing, respectively. Previous research using antidepressants predominantly affecting serotonin or noradrenaline activity suggests that antidepressants may act to reduce the negative biases in emotional processing, which then influences low mood; however, such antidepressants do not fully correct the anhedonia. This lack of efficacy underlines the need for further research to unravel the rol

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Hadar, Ravit [Verfasser]. "Neural reward systems in the honeybee : characterizing the involvement of the mushroom body (MB) extrinsic neurons in reward processing & reversal learning in honeybees / Ravit Hadar." Berlin : Freie Universität Berlin, 2011. http://d-nb.info/1025305353/34.

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Murao(Toyoda), Ema. "Differences in Neural Responses to Reward and Punishment Processing between Anorexia Nervosa Subtypes: An fMRI Study." Kyoto University, 2017. http://hdl.handle.net/2433/227589.

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29

Garcia, Aguirre Ana I. "Timing, reward processing and choice behavior in four strains of rats with different levels of impulsivity." Thesis, Kansas State University, 2011. http://hdl.handle.net/2097/10743.

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Master of Science<br>Department of Psychology<br>Kimberly Kirkpatrick<br>Several studies have examined timing and impulsive choice behavior in spontaneously hypertensive rats (SHR) as a possible pre-clinical model for Attention Deficit Hyperactivity Disorder (ADHD). However, the strain has not been specifically selected for the traits of ADHD and as a result their appropriateness as a model has been questioned. This study investigated whether SHR would exhibit timing deficits, poor reward processing and impulsive behavior in comparison to the Wistar Kyoto (WKY) control strain in a discrete-t

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Kaye, Sherrie-Anne. "Individual differences in the processing of punishment and reward cues : an application to road safety messages." Thesis, Queensland University of Technology, 2014. https://eprints.qut.edu.au/79616/1/Sherrie-Anne_Kaye_Thesis.pdf.

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This thesis examined the extent to which individual differences, as conceptualised by the revised Reinforcement Sensitivity Theory, influenced young drivers' information processing and subsequent acceptance of anti-speeding messages. Using a multi-method approach, the findings highlighted the utility of combining objective measures (a cognitive response time task and electroencephalography) with self-report measures to assess message processing and message acceptance, respectively. This body of research indicated that responses to anti-speeding messages may differ depending on an individual's

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Wolke, Selina Alicia. "Mechanisms of reward in depression : an intervention study investigating the acute effects of lurasidone on cerebral blood flow and the neural correlates of reward and penalty processing." Thesis, King's College London (University of London), 2018. https://kclpure.kcl.ac.uk/portal/en/theses/mechanisms-of-reward-in-depression(da7dcfdd-b784-4037-8f2b-009623ebe7ac).html.

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Major Depressive Disorder (MDD) is a common, recurrent and disabling mental illness which is poorly treated by currently prescribed drug therapies. The discovery of treatment tools that target putative mechanisms of illness in depression is thus a clinical priority. Depression is characterised by hyporeactivity to reward and hyperactivity to aversive stimuli, which putatively reflects altered function in fronto-striatal-limbic brain regions innervated by monoamines. Yet, very few studies have used dopaminergic drugs to probe the association between neural reward- and especially penalty- signal

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Picado, Rossi Marisol. "Neurofunctional Markers of Reward and Timing Processing in Adult Attention Deficit and Hyperactiviy Disorder: an fMRI Study." Doctoral thesis, Universitat Autònoma de Barcelona, 2013. http://hdl.handle.net/10803/131326.

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El trastorno por deficit de atención con hiperactividad (TDAH) es considerado uno de los trastornos psiquiátricos infantiles con mayor prevalencia, careacterizado por síntomas de inatención, hiperactividad e impulsividad. Hasta hace poco, se pensanba que los síntomas mejoraban con la edad, pero recientemente existe evidencia de que los síntomas del trastorno pueden prevalecer hasta la edad adulta. Un estudio reciente indicó que un 35% de los casos continuaban presentando el trastorno en la adultez, afectando aproximadamente entre un 3-7% de la población adulta. A pesar de que el substrato neur

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Wong, C. Peng. "The genetics and epigenetics of substance misuse : an investigation into life stress and reward processing in adolescence." Thesis, King's College London (University of London), 2014. https://kclpure.kcl.ac.uk/portal/en/theses/the-genetics-and-epigenetics-of-substance-misuse(3ee1860a-0095-4bee-bdaf-61380a797c25).html.

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Substance misuse and addictions impose serious health and socio-economic consequences for both individuals and societies. Substance use during adolescence predicts the severity of addictions in later life, indicating that adolescence is an important milestone for developing addictions. Alcohol and tobacco are the most common form of substance use in adolescents. The heritability estimates of alcohol and tobacco addictions range between 30-70%, suggesting that both genetic and environmental factors could contribute to the risks of addictions. This PhD thesis aimed to identify the genetic and ep

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Kumar, Poornima. "Computational modelling of reward learning and social information processing in major depression : a functional MRI and behavioural investigation." Thesis, University of Aberdeen, 2008. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=166598.

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It was hypothesised that major depressive disorder (MDD) is associated with a dysfunctional reinforcement processing system, affecting both simple (“primary”) and social reinforcers. The main objective of this thesis was to test this hypothesis. MDD patients and matched healthy controls participated in a Pavlovian reward learning and a social inclusion task, and their neural responses were measured using functional MRI. In addition, subjects participated in a behavioural facial recognition task. It was additionally hypothesised that antidepressants may have an effect on reward-learning sig

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Vega, Moreno Daniel. "Neurophysiological correlates of reward processing and cognitive control in Borderline Personality Disorder patients with and without self-harm history." Doctoral thesis, Universitat Autònoma de Barcelona, 2014. http://hdl.handle.net/10803/287912.

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El trastorno límite de la personalidad (TLP) es un trastorno mental grave. Las profundas perturbaciones en la regulación del afecto y el control de los impulsos que se observa en estos pacientes han sido relacionadas con un pobre control inhibitorio prefrontal, lo que sugiere una desregulación de las redes fronto-límbicas responsables del control ejecutivo y el procesamiento de la recompensa. Esta tesis está dedicada al estudio del procesamiento de la recompensa y los mecanismos de control cognitivo en pacientes con TLP. En particular, se pretende examinar las posibles alteraciones en estas fu

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[Verfasser], Ferreira de Sá Diana S., and Hartmut [Akademischer Betreuer] Schächinger. "Reward-related processing of visual food cues: neuroendocrine and stress mechanisms / Diana S. Ferreira de Sá ; Betreuer: Hartmut Schächinger." Trier : Universität Trier, 2015. http://d-nb.info/1197701273/34.

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Özdogan, Tugba [Verfasser]. "Evaluating the role of hippocampal processing in encoding and storing reward relevant information for goal-directed behavior / Tugba Özdogan." Berlin : Freie Universität Berlin, 2020. http://d-nb.info/121725126X/34.

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Hassan, Eusra. "A Study of the Relationship of Abnormal Reward Processing and Dopamine Signalling in Adults with High Functioning Autistic Spectrum Disorder." Thesis, University of Liverpool, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.526878.

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Zschucke, Elisabeth [Verfasser]. "Exercise as a treatment strategy in mental disorders : Alterations in reward and stress processing as potential mechanisms of action / Elisabeth Zschucke." Berlin : Freie Universität Berlin, 2016. http://d-nb.info/1081660120/34.

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Becker, Christoph Alexander [Verfasser]. "Neuronal processing of natural rewards / Christoph Alexander Becker." Konstanz : Bibliothek der Universität Konstanz, 2017. http://d-nb.info/1132995639/34.

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Krämer, Bernd [Verfasser], Oliver [Akademischer Betreuer] Gruber, Birgit [Gutachter] Kröner-Herwig, and Michael [Gutachter] Waldmann. "Fronto-striatal brain circuits involved in the pathophysiology of schizophrenia and affective disorders: FMRI studies of the effects of urbanicity and fearful faces on neural mechanisms of reward processing and self-control / Bernd Krämer ; Gutachter: Birgit Kröner-Herwig, Michael Waldmann ; Betreuer: Oliver Gruber." Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2017. http://d-nb.info/1123283133/34.

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Punjabi, V. (Vikesh). "Security risks:threats & rewards in social media." Master's thesis, University of Oulu, 2015. http://urn.fi/URN:NBN:fi:oulu-201502111069.

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In the last decade, without any doubt, social media i.e. social network platforms that are mainly created in order to interact with each other such as Facebook, Twitter, LinkedIn, Google +, Tumblr, Instagram, Flickr, Myspace, Blogs, YouTube, or any user generated content websites gained huge access in public daily life including individuals and organizations. These social network platforms, especially Facebook, Twitter, YouTube, were grown in such fast pace manner that even the big companies including Microsoft, Google, etc. has changed their strategies, and adapted social network platforms ve

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FINOCCHIARO, ROBERTA. "Meccanismi di ricompensa e lateralizzazione inter-emisferica nei processi decisionali: componenti motivazionali e la vulnerabilità a comportamenti di dipendenza." Doctoral thesis, Università Cattolica del Sacro Cuore, 2017. http://hdl.handle.net/10280/17221.

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Lo scopo della presenta ricerca è analizzare il ruolo del sistema di ricompensa in relazione al costrutto BIS/BAS (Behavioural Inhibition System/ Behavioural Activation System) in un contesto sano e di dipendenza da sostanza. Il lavoro ha inoltre esplorato l'asimmetria cerebrale frontale nelle scelte decisionali che implicano stimoli di ricompensa e condizioni punizione. I risultati hanno confermato l'ipotesi di un anomalia del sistema di ricompensa in individui con alto BAS e in pazienti con dipendenza da sostanza, che sovrastimavano la ricompensa immediata a scapito di quella a lungo termine

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FINOCCHIARO, ROBERTA. "Meccanismi di ricompensa e lateralizzazione inter-emisferica nei processi decisionali: componenti motivazionali e la vulnerabilità a comportamenti di dipendenza." Doctoral thesis, Università Cattolica del Sacro Cuore, 2017. http://hdl.handle.net/10280/17221.

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Lo scopo della presenta ricerca è analizzare il ruolo del sistema di ricompensa in relazione al costrutto BIS/BAS (Behavioural Inhibition System/ Behavioural Activation System) in un contesto sano e di dipendenza da sostanza. Il lavoro ha inoltre esplorato l'asimmetria cerebrale frontale nelle scelte decisionali che implicano stimoli di ricompensa e condizioni punizione. I risultati hanno confermato l'ipotesi di un anomalia del sistema di ricompensa in individui con alto BAS e in pazienti con dipendenza da sostanza, che sovrastimavano la ricompensa immediata a scapito di quella a lungo termine

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Lin, Alice. "Neural and Behavioral Investigations of Social Reward Processing." Thesis, 2012. https://thesis.library.caltech.edu/7137/1/ALin_CNS12_thesis_FINAL.pdf.

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Despite an extensive literature on the neural substrates of reward, relatively little is known about how social interactions modify decision-making. Here I present three experiments that examine the neural basis of social reward processing both in neurotypicals and individuals with autism spectrum disorder (ASD), a neuropsychiatric syndrome associated with social cognition impairments. Using functional magnetic resonance imaging (fMRI), I recorded brain activity during a probabilistic reward learning task with either social (smiling/frowning faces) or monetary (gaining/losing money) rewards. I

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Berman, Taryn. "Exploring personality: the impact of impulsivity on decision making and reward processing." Thesis, 2019. http://hdl.handle.net/1828/10797.

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Impulsivity is a common and multifaceted personality trait that is characterized by the presence of heightened reward sensitivity, novelty seeking, lack of premeditation, and behavioural and emotional inhibition deficits (Leshem, 2016a). These behaviours are often associated with substance abuse, gambling disorders, obesity, abnormal time perception, and other psychological and neurological conditions (Bari & Robbins, 2013; Berlin & Rolls, 2004). Reward processing deficits have also been well documented, with many researchers finding an association between impulsivity and the inclination towar

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Mullett, Ada. "Linking changes in performance for brain stimulation reward to stages of neural processing." Thesis, 2005. http://spectrum.library.concordia.ca/7829/1/MR04322.pdf.

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This thesis tested a model of how brain reward circuitry operates. The proportion of a subject's time that it is willing to dedicate to performance of an operant task (time allocation) depends on the strength and cost of the reward. Plotting time allocation as a function of pulse frequency and price yields a three-dimensional structure called the "mountain." According to the model tested by the experiment, the mountain reflects processing of information about reward strength and price in a multi-stage network. An initial stage translates impulse flow in the directly activated neurons into a ne

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Martin, Laura E. "Individual differences in decision-making and reward processing: An event-related potential investigation." Thesis, 2004. http://hdl.handle.net/1911/17705.

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Gambling paradigms tapping both reward processing and decision-making tasks in control and patient populations have found differences in behavior based on individual differences in immediate reward representation. The current investigation examined decision-making in individuals who differed on self-reported measures of impulsivity and used event-related potentials (ERPs) to examine the network dynamics of reward and decision-making circuitry among low and high impulsive participants. An inferior frontal component, the anterior P2 (P2a), indexing orbitofrontal cortex (OFC) activity, and a medi

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Vavassis, Angela. "The influence of reward on early information processing along the “visual perception-overt behaviour” continuum." Thesis, 2012. http://spectrum.library.concordia.ca/974026/1/Vavassis_PhD_S2012.pdf.

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Past research has reliably established that rewards exert an influence on overt/observable behaviours (e.g., explicit choices, limb/body movements, eye- movements). Oftentimes, a reward may be acquired by performing a specific behaviour in response to a visual target. Under such circumstances, research has demonstrated that the reward covertly influences the late neural stages of information processing along the “visual perception-overt behaviour” continuum (e.g., the motor processing immediately preceding the performance of the overt behaviour needed to acquire the reward associated with the

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Nikolova, Yuliya. "Individual Differences in Neural Reward and Threat Processing: Identifying Pathways of Risk and Resilience for Psychopathology." Diss., 2014. http://hdl.handle.net/10161/8698.

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<p>The goal of this dissertation is two-fold: 1) to identify novel biological pathways implicating individual differences in reward and threat processing in the emergence of risk and resilience for psychopathology, 2) to identify novel genetic and epigenetic predictors of the inter-individual variability in these biological pathways. Four specific studies are reported wherein blood oxygen-level dependent functional magnetic resonance imaging (BOLD fMRI) was used to measure individual differences in threat-related amygdala reactivity and reward-related ventral striatum (VS) reactivity; self-re

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