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 1557 for “"reward"”.
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Impulsivity and Reward Sensitivity: Attentional and Emotional Factors Underlying Stimulus-Reward Learning
Increased impulsivity and alterations in reward sensitivity co-occur in many psychiatric disorders. Moreover, individuals reporting more impulsive traits are less efficient in learning stimulus-reward associations. This suggests that impulsivity and reward sensitivity may be linked, consistent with …
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Brainwaves, Memory, and Reward
… involves the crucial consideration of effort and rewards. In the realm of education, teachers commonly employ rewards as motivational tools. Traditionally, these rewards are given to students as a recognition of their successful performance. However, a thought-provoking idea emerges: What if we …
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The effects of differential goalbox reward and reward shifts on the frustration effect
To determine whether incomplete reward reduction and reward increment would influence the "frustration effect" (FE) in double alleyway, rats were given 153 trials with 50% partial reward in Goalbox 1 with 4 or 12 pellets in Goalbox 1 and 4 or 12 pellets in Goalbox 2. On trials 106-153, the …
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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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Reward-oriented processes in bipolar disorder
… is thought to be a link between characteristic reward-oriented processes in bipolar disorder and dysregulation in the behavioural activation system (BAS). This study aimed to assess differences between bipolar and healthy control individuals in their response to reward, failure and a reasoning …
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Neuroeconomics of Reward Information and Motivation
… approach to understand the processing of reward information and motivation in the brain, utilizing neural data from functional magnetic resonance imaging (fMRI) to make connections between cognitive neuroscience and economics.</p><p>Chapter 1 lays the groundwork for the thesis and provides …
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Reward Neurocircuitry in Autism Spectrum Disorder
… others' phrases). A recent framework suggests reward system dysfunction to be at the core of ASD symptoms. However, if the reward system is impaired in ASD, it is paradoxical that reward-based strategies are commonly used during interventions. The goal of this thesis was to investigate the …
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Bayesian nonparametric reward learning from demonstration
… inverse reinforcement learning, whereby the reward of the demonstrator is inferred. Formally, inverse reinforcement learning (IRL) is the task of learning the reward function of a Markov Decision Process (MDP) given knowledge of the transition function and a set of observed demonstrations. …
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Gut-brain interactions in food reward
… foods deliver calories rapidly and are highly rewarding. In literature surrounding substances of abuse, the speed at which a drug reaches the brain affects its abuse potential; this is known as the "rate hypothesis." Here, we test whether the rate hypothesis of addiction may apply to food, …
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Age Differences in Reward Anticipation and Memory
… to that of older adults, research has shown that reward cues can enhance motivated learning and item memory performance of younger adults. In an fMRI study that examined the influence of reward anticipation on episodic memory formation, Adcock and colleagues (2006) examined memory performance in …
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Neural Mechanisms of Homeostatic Need and Reward
… we examined nucleus accumbens (NAc), a canonical reward center that regulates feeding and drinking, but it is not known whether these behaviors are mediated by same or different neurons. We employed two-photon calcium imaging in awake, behaving mice and found that during the appetitive phase, both …
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Dopaminergic modulation of reward and punishment learning
Contains fulltext : 128280.pdf (Publisher’s version ) (Open Access)
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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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Reward-related neural activity in ventral hippocampus
… 주어지는 Conditional Stimulus(CS)구간과 보상으로 물이 나오는 Reward(Rw)구간에서 반응하는 신경세포들이 가장 많이 나타났다. 이것을 통해 복측해마가 보상에 대하여 반응함을 알 수 있다. 그리고 보상에 대한 가치를 표상하는지 여부를 분석했다. 그 결과, CS구간에서는 선택했을 때에 받을 수 있는 예상가치인 chosen value가 강하게 나타났지만 Rw 구간에서는 현저하게 낮아짐을 볼 수 있었다. 이것은 CS구간에서 선택한 것에 대한 보상의 가치가 표상되지만 Rw 구간에서는 이미 보상을 얻은 후이기 …
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Reward Optimisation: The case for employer branding
… been found and is often the basis of determining reward offerings. The global economic recession of the recent past and the decreasing availability of financial resources has meant that organisations need to identify alternative (non-financial) strategies to attract, motivate and retain employees, …
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On maximum-reward motion in stochastic environments
… mobile robot operating in a stochastic reward field to maximize total rewards collected in an online setting. This is a generalization of the problem where an unmanned aerial vehicle (UAV) collects data from randomly deployed unattended ground sensors (UGS). Specifically, the rewards are …
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Individual Differences in the Dopaminergic Reward System: The Effect of Genetic Risk on Neural Reward Sensitivity and Risky Choice
… their choice; however, some display heightened reward sensitivity, despite the potential for future negative consequences, which can lead one to make risky choices. Rewards are processed in the mesolimbic dopamine reward system, and this system is in part modulated by genetic polymorphisms that …
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The Role of Impulsivity and Reward Reactivity in Gray's Behavioral Activation System: Self-Reported Behavior and Autonomic Response to Reward
… a central role in approach motivation and reward sensitivity (Gray, 1970). Self-report measures of BAS (e.g., Carver & White, 1994) have been used to index BAS activity, with higher scores interpreted as indicating greater BAS activity (e.g., Hundt et al., 2008). However, Beauchaine and …
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Pinpointing the cerebellum's contribution to social reward processing
… for our mental models to help us. From a reward processing standpoint, this requires tracking the value (positive or negative) of people’s valence to us and ensuring that our predictions about people’s affect towards us are correct. The aim of this project was to specify how the posterior …
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