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.
Results
Showing 1 to 20 of 102 for “"Associative learning"”.
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Gabab Regulation of Methamphetamine-Induced Associative Learning
… adaptations associated with drug-induced associative learning and provides a means to evaluate the utility of potential pharmacotherapies to reduce the salience of drug-associated cues.</p><p>As the major inhibitory neurotransmitter in the brain, GABA neurotransmission influences a number …
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Associative learning in auditory thalamus and amygdala
… amygdala (BLA) play in the formation of associative learning, many open questions remain. MGN is often thought of as only contributing relayed sensory information, and BLA the primary site of importance for the formation of associative learning, aspects of these assumptions have not been …
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Changes to Associative Learning Processes in Later Life
… to describe and explain age related changes to associative learning processes. Eleven experiments were conducted using a human conditional learning paradigm. Background data on health, lifestyle, and cognitive ability were collected and used as predictor variables in multiple regression …
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HiBi: A hierarchical bigram model for associative learning
… of deep neural architectures. While effective in learning input-output mappings from two arbitrary distributions, the complex nature of neural models makes them hard to interpret. In this thesis, we introduce a more interpretable hierarchical bigram (HiBi) model, which is extended based on the …
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FUNCTIONAL ROLES OF MIDBRAIN DOPAMINE NEURONS IN ASSOCIATIVE LEARNING
… to play a critical role in reward-related learning, and the predominant hypothesis proposes that dopamine neurons signal the expected reward values of sensory stimuli in the form of a short-latency phasic burst. Thus, the reward prediction hypothesis assumes that information relevant to …
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Assessing Motivational and Associative Learning Mechanisms Underlying Compulsive Drinking
… Increased sensitivity to drug-paired stimuli via associative learning processes may provide this additional motivation. To evaluate if alcohol-paired stimuli enhance alcohol seeking, selectively bred crossed High Alcohol Preferring mice experienced Pavlovian conditioning procedures with an alcohol …
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The role of Prediction Error in Probabilistic Associative Learning
This thesis focuses on probabilistic associative learning. One of the classic effects in this field is the stimulus associability effect for which I derive a statistically optimal inference model and a corresponding approximation that addresses a number of problems with the original account of …
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Context specificity of associative learning in the snail Cornu aspersum
El presente trabajo es una investigación experimental de dos efectos contextuales del aprendizaje (inhibición latente o IL y renewal) en el caracol Cornu aspersum mediante procedimientos de Condicionamiento Clásico. La exposición repetida a un estímulo condicionado o EC (olor) sin consecuencia …
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Implicit learning of phonotactics: an example of pure associative learning?
In order to study the processes of implicit learning in speech production, research participants were exposed to sequences of nonsense syllables which obeyed artificial phonotactic constraints. For example, /f/ showed up only at the beginning of syllables for some participants (whereas in English, …
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An Analysis of Associative Learning in Drosophila at the Flight Simulator
Most natural learning situations are of a complex nature and consist of a tight conjunction of the animal's behavior (B) with the perceived stimuli. According to the behavior of the animal in response to these stimuli, they are classified as being either biologically neutral (conditioned stimuli, …
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Examination of neocortical plasticity during forebrain-dependent trace-associative learning tasks
Classic studies utilizing general learning and memory tasks, such as environmental enrichment and acrobatic training paradigms, have robustly demonstrated increased neocortical dendritic spine density following various types of general learning. Though these studies have been instrumental in …
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Methamphetamine and amphetamine differentially affect associative learning: behavioral and neurobiological correlates
… to addiction processes is maladaptive associative learning wherein substance-related cues become closely associated with the drug response. These strong associations are thought to contribute significantly to drug craving and promote the cycle of abuse by increasing susceptibility to …
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The role of ras signaling associative learning and memory in Drosophila
… plasticity. I investigated the role of Ras in associative learning and memory in Drosophila. Flies carrying hypomorphic ras mutations were impaired in memory, with normal learning performance. The severity of the memory impairment correlated with molecular lesions in the ras gene. Studies on …
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The effects of an acute flurothyl seizure on associative learning and memory.
… have demonstrated impairment of spatial learning and memory in both neonatal and adult rats. However, most studies focused on inducing several seizures and much later examining learning and memory. The impact of a single acute seizure on learning and memory has not been investigated in …
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ACUTE NICOTINE-DEPENDENT ALTERATIONS IN ASSOCIATIVE LEARNING INTERFERE WITH BACKWARDS TRACE CONDITIONED SAFETY
… that nicotine has been shown to modulate associative learning, including hippocampus-dependent forms of fear learning, we hypothesized that nicotine administration could cause maladaptive associative learning to occur, leading to altered safety learning. In the present study, mice were …
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The Effects of Aging on Associative Learning and Memory Retrieval in Causal Judgment
… and judging causal relationships requires associative learning and memory. Retrospective revaluation of causal cues requires associative memory (Aitken, Larkin, & Dickinson, 2001) to bind multiple cues together and use these associations to retrieve unseen cues for revaluation of their …
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Theory protection in human associative learning and formally representing uncertainty about novel stimuli
… a potential role for theory protection in human associative learning. According to theory protection, people should resist updating their existing knowledge (i.e. resist new learning), even when faced with evidence that contradicts what they already know. In other words, people should maintain …
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Signal Detection Theory on Associative Learning: an example from contrary cue interaction phenomena
Tesis con mención internacional
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The role of the kappa opioid receptor system in forebrain dependent associative learning
… be involved in pain processing, addiction, and learning and memory. It has been previously established that the mu opioid receptor (MOR) is intimately involved in the acquisition and consolidation of memories. While these studies have provided valuable insight into the role of MOR in learning, …
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