Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 51 for “"reward processing"”.
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The Neurobiology of Reward Processing in 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 …
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Pinpointing the cerebellum's contribution to social reward processing
… has been traditionally thought of as a motor processing brain region, recent evidence suggests that the cerebellum is functionally diverse. The posterior cerebellum in particular has been shown to play a role in social cognitive processes, and recent work has proposed that this region helps …
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The Influence of Neural Reward Processing on Memory in Depression
… suggest that depression involves impaired reward sensitivity and a deficit in memory for rewarding stimuli. Some researchers propose that this memory deficit may result from reduced neural reward sensitivity, which impairs the encoding of reward-related memories, but few studies have …
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Investigating emotion and reward processing using an associative matching task
… preference for stimuli with an emotional or rewarding connotation, compared to stimuli with no emotional or rewarding connotation. Known as a prioritisation effect, this phenomenon leads to enhanced memory, attention, reaction time and accurate responses to emotional and rewarding stimuli in …
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The Association Between Cannabis Use and Reward Processing, and the Role of Adolescent Vulnerability
… with the ‘amotivational syndrome’, implying that reward or motivational processes are dysfunctional in cannabis users. Maladapted reward processing, such as anhedonia and apathy, is a cross-diagnostic symptom in psychiatric disorders, including substance use disorders. Finally, adolescents may be …
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The Effects of Anxiety and Reward Sensitivity on the Interplay Between Emotion and Reward Processing
This study investigated the interplay between reward and emotion processing and examines the influence of individual differences, specifically anxiety and reward sensitivity, on these cognitive processes. Using a within-subjects design, 50 university students completed three associative matching …
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Investigating the effects of living with HIV on neural circuits involved in reward processing in adolescents
… behaviour. Here, neural circuits involved in reward processing during adolescence are investigated using functional MRI (fMRI). FMRI scans acquired during a Reward Magnitude Task were available for 106 socio economically matched adolescents (66 children perinatally infected with HIV (CPHIV), …
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The Impact of Early Life Adversity on Neural Reward Reactivity in Early Childhood
… for psychiatric disorders. Dysfunction in neural reward systems may represent a mechanism through which ELA increases risk for later psychopathology; however, few studies have examined the proximal impact of ELA on reward processing in early childhood, prior to periods of enhanced risk for …
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The Enduring Outcomes of Stress During Neurodevelopment Dynamically Impact Food Reward Responsiveness and Valuation: A Meta-Analysis of Pre-Clinical Evidence
… to the onset of adulthood, increases risk of reward-processing pathology in later life. Pre-clinical research using rodent models provide a means for examining the enduring effects of ELS on reward-related behaviours in a causal manner. Evidence from pre-clinical research varies; some studies …
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Neurocorrelates of Character Choice in a Videogame Task
… have shown that choice of visual frame affects reward processing of task outcomes. Together, autonomy supports seem to enhance engagement and interest in a situation. In the present work, participants were presented with five characters to use as their avatar in a “running” game, requiring them …
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Investigating the influence of LH-projecting BLA neurons upon motivated behavioral responding and appetitive learning
… learn contingencies between external stimuli and rewards and appropriately respond to these associations. Deficits in reward-related learning or reward-seeking are thought to occur in a host of psychopathologies, including depression (Drevets, 2001), eating disorders (Wagner et al., 2007), and …
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Examining the Role of Physiological Arousal in Laboratory Risk-Taking in Social and Non-Social Contexts
… during adolescence to heightened activity in reward processing brain regions when in the presence of social and non-social rewarding stimuli. However, non-rewarding, but very salient stimuli, have also been shown to increase activity in reward processing brain regions and could, in theory, …
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Association between the magnitude of the immune response and recurrent major depression disorder in humans and depression-like behavior in animals
… gene expression in brain areas associated with reward processing and stress (Study 3). Although there was no evidence of increased circulating or stimulated levels of inflammation among women’s history of rMDD in Study 1, current level of anhedonia was associated with increased stimulated levels …
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Neuroimaging Depression Risk in a Sample of Never-Depressed Children
… with grey matter volume in regions relevant to reward processing (i.e., orbitofrontal cortex; Study 1), functional activity in salience processing regions (i.e., anterior insula) and reward processing (i.e., putamen) during critical maternal feedback (Study 2), and resting-state functional …
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Examining Reward Reactivity Using EEG Between Mother-Child Dyads With and Without a History of Depression
… this intergenerational transmission is atypical reward processing. Neural responses to reward can be measured via electroencephalogram (EEG); the reward processing pathway is often measured in the time-domain through an event-related potential (ERP) known as the Reward Positivity (RewP). While …
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Stress and Reward Function in Concurrent Depression and Chronic Cannabis Use
… in the regulation of stress responses and reward processing underlying anhedonia, which may be putative processes through which depression outcomes are worsened with chronic cannabis use. This investigation utilized a prospective design to examine differences in depression, functioning, …
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Self- and other-regarding reinforcement learning: Disruptions in mental disorders and oxytocin's modulating role in healthy people
It has been suggested that reward processing and related neural substrates are disrupted in some common mental disorders such as depression, addiction, and anxiety. An increasing number of psychiatric studies have been applying reinforcement learning (RL) models to examine these disruptions in …
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DIETARY AND EXERCISE EFFECTS ON NEURAL RESPONSES TO VISUAL FOOD STIMULI IN OVERWEIGHT AND OBESE ADULTS
… that obesity is associated with altered neural reward processing of food-relevant cues. These observations have caused some investigators to question whether behavioral interventions such as dietary manipulations or physical activity might modulate processing of food cues in reward-related brain …
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Characterization of genetically distinct neuronal subtypes in the lateral habenula using Cre mouse lines
… brain structure implicated in action selection, reward processing, and motivation. The LHb projects to the ventral tegmental area (VTA) and dorsal raphe nucleus (DNR), and is thus involved in both dopaminergic and serotonergic pathways. Recent single-cell transcriptomic profiling of the LHb has …
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Appetitive Responding and the Female Menstrual Cycle: An Investigation into the Post-Auricular Reflex
… reaction that has been linked to motivation and reward, emotion, and appetitive responding. The PAR responds to pleasant stimuli, including stimuli that are relevant to evolutionary themes. The purpose of the current study was to explore the nature of the post-auricular reflex, and in particular, …
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