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Articles 1 - 5 of 5
Full-Text Articles in Other Neuroscience and Neurobiology
Influences Of Sex, Alcohol, And Stress On Conditioned Fear Responses, Heyam K. Mayberry
Influences Of Sex, Alcohol, And Stress On Conditioned Fear Responses, Heyam K. Mayberry
MUSC Theses and Dissertations
Learned fear responses are acquired through the identification and association of threatening stimuli with aversive outcomes. Fear responding and the proper maintenance of defensive behaviors is integral to survival. However, without the homeostasis of such systems, fear responses can become maladaptive and lead to dysregulated behavioral responding. Psychological conditions such as alcohol use disorder (AUD) and post-traumatic stress disorder (PTSD) often lead to impairments in fear learning, deficits in fear memory, and heightened fear responses. While there are clear sex differences in the prevalence of both AUD and PTSD, development of either disorder increases the risk for comorbid AUD/PTSD, leading …
High Fat Diet & Social Isolation: Interactive Effects On Pain, Cognition, & Neuroinflammation, Ian M. Campuzano
High Fat Diet & Social Isolation: Interactive Effects On Pain, Cognition, & Neuroinflammation, Ian M. Campuzano
Research Psychology Theses
Prior research has established a role for both social isolation and exposure to high fat Western diets in altering a range of behaviors from reduced memory performance to increased depression-like behaviors. The present study scrutinizes the interplay among these variables during the peri-adolescent developmental phase, utilizing Long-Evans rats as the experimental model. Our overarching hypothesis is that rats exposed to either social isolation, a high-fat diet, or both will result in heightened pain sensitivity, diminished cognitive flexibility, and increased neuroinflammatory responses within brain regions implicated in sociability, cognition, memory, and pain processing. Behavioral flexibility will be assessed using a maze-based …
Discrimination And Behavioral Responses To Communication Signals Compared Across Apteronotids., Danielle Leigh Dillon-Seeger
Discrimination And Behavioral Responses To Communication Signals Compared Across Apteronotids., Danielle Leigh Dillon-Seeger
Graduate Theses, Dissertations, and Problem Reports (ETD)
Sensory systems are often uniquely tailored to encode behaviorally relevant signals and comparative studies across species can thus reveal how evolutionary changes shape sensory functions. The structure of communication signals varies widely between ghost knifefish species. Recent findings suggest that the nervous system co-adapted to the various signal structures observed across species to support different sensory behaviors. The aim for this thesis was to compare the sensory behavior of 3 species of ghost knifefish to contrast their behavioral performance with the known differences in neurophysiology. We hypothesize that for the different signal types and species, the ability to discriminate small …
Mesotocin Influences Pinyon Jay Prosociality, J. F. Duque, W. Leichner, H. Ahmann, Jeffrey R. Stevens
Mesotocin Influences Pinyon Jay Prosociality, J. F. Duque, W. Leichner, H. Ahmann, Jeffrey R. Stevens
Center for Brain, Biology, and Behavior: Faculty Publications
Many species exhibit prosocial behavior , in which one individual’s actions benefit another individual, often without an immediate benefit to itself. The neuropeptide oxytocin is an important hormonal mechanism influencing prosociality in mammals, but it is unclear whether the avian homologue mesotocin plays a similar functional role in birds. Here, we experimentally tested prosociality in pinyon jays (Gymnorhinus cyanocephalus), a highly social corvid species that spontaneously shares food with others. First, we measured prosocial preferences in a prosocial choice task with two different pay-off distributions: Prosocial trials delivered food to both the subject and either an empty cage …
Behavioral Responses To Methylphenidate: Correlations With Neuronal Activity In The Caudate Nucleus, Catherine M. Claussen
Behavioral Responses To Methylphenidate: Correlations With Neuronal Activity In The Caudate Nucleus, Catherine M. Claussen
Dissertations and Theses (Open Access)
Methylphenidate is currently a drug of abuse and readily prescribed to both adolescents and adults. Chronic methylphenidate (MPH) exposure results in an increase in DA in the motive circuit, including the caudate nucleus (CN), similar to other drugs of abuse. This study focuses on research aimed to elucidate if there are intrinsic underlying differences in the CN electrophysiological activity of animals exhibiting different chronic responses to the same dose of MPH. Behavioral and caudate nucleus (CN) neuronal activity following acute and chronic doses of MPH was assessed by simultaneously recording the behavioral and neuronal activity. The experimental protocol lasted for …