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Articles 1 - 5 of 5
Full-Text Articles in Neuroscience and Neurobiology
An Event-Related Potential Study Of Inhibition To Sugar-Sweetened Beverages, Hanel Watkins
An Event-Related Potential Study Of Inhibition To Sugar-Sweetened Beverages, Hanel Watkins
Undergraduate Honors Theses
In the United States, the intake of sugar-sweetened beverages per capita from 1977 to 2002 doubled across all age groups. One factor that may contribute to the consumption of sugar-sweetened beverages is inhibitory control, or the ability to withhold a dominant response in order to correctly respond to one’s environment. Studies suggest that increased recruitment of inhibitory control resources plays a role in decreasing the consumption of high-calorie foods and that strengthening an individual’s inhibitory control may help them manage their food intake. However, the neural response to sugar-sweetened beverages versus non-sweetened beverages is unknown. Thus, we tested event-related potential …
Mechanoreceptor Activation In The Treatment Of Drug-Use Disorders: Mechanism And Outcome, Kyle Bills
Mechanoreceptor Activation In The Treatment Of Drug-Use Disorders: Mechanism And Outcome, Kyle Bills
Theses and Dissertations
The therapeutic benefits attributed to activation of peripheral mechanoreceptors are poorly understood. There is growing evidence that mechanical stimulation modulates substrates in the supraspinal central nervous system (CNS) that are outside the canonical somatosensory circuits. This work demonstrates that activation of peripheral mechnoreceptors via mechanical stimulation (MStim) is sufficient to increase dopamine release in the nucleus accumbens (NAc), alter neuron firing rate in the ventral tegmental area (VTA) and increase membrane translocation of delta opioid receptors (DORs) in the NAc. Further, we demonstrate that these effects are dependent on DORs and acetylcholine receptors. Additionally, MStim can block neuronal markers of …
Sex Differences In Ethanol Modulation Of Dopamine Release In The Mesolimbic Reward System, Mandy Parsons
Sex Differences In Ethanol Modulation Of Dopamine Release In The Mesolimbic Reward System, Mandy Parsons
Undergraduate Honors Theses
This thesis seeks to synthesize previous studies that have shown sex differences in response to drugs of abuse, specifically cocaine and alcohol. These differences have been noted through the study of behavior, nitric oxide levels in the medial amygdala, and dopamine release within the mesolimbic system. Importantly, it has been consistently found that these differences seem to correlate with the changing hormonal environment produced by the estrus cycle in females. Furthermore, this thesis examines new research on how the estrus cycle modulates dopamine release within the reward circuit through the utilization of fast scan cyclic voltammetry and microdialysis techniques. A …
A Quantitative Motor Assessment Linked To Underlying Damage In Traumatic Brain Injury, Paula K. Johnson
A Quantitative Motor Assessment Linked To Underlying Damage In Traumatic Brain Injury, Paula K. Johnson
Theses and Dissertations
Traumatic brain injury (TBI) is a leading cause of disability in the United States (Coronado et al., 2011). There is a recognized need for better motor assessments to help mitigate these disabilities. Advances in markerless motion capture and in magnetic resonance imaging (MRI) provide an opportunity to improve clinical assessments, and link them to damage measured in MRI scans. The primary aims of this research were to 1) develop a quantitative motor assessment (QMA), and seed a normative database to enable comparison of impaired behavior to unimpaired, 2) test the sensitivity of the QMA, and 3) link QMA results to …
"Where Was I?": Linguistic Reprocessing In Distracted Reading, Katrina Hillam
"Where Was I?": Linguistic Reprocessing In Distracted Reading, Katrina Hillam
Undergraduate Honors Theses
This thesis examines the impact of repeated auditory and task-oriented distractors on linguistic processing. Impact was measured through eye tracking software recording first fixation duration, gaze duration, and total time spent on distractor words. This study found consistent significant difference only in the total time category, suggesting that the processing stage most impacted by distraction is global context—our awareness of how a word fits in to the paragraph at large. Participants were skilled at regaining reading speed after distraction, showing no overall impairment for other processing levels. This phenomenon could be dangerous for student comprehension, as reading speed will be …