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| BPN Saturday Poster Session |
| Saturday, May 24, 2025 |
| 1:00 PM–3:00 PM |
| Convention Center, Lower Level, Hall C |
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| 61. The Effect of Rhythmic Brain Stimulation on Brain Network and Behavior for Bilateral Movements |
| Area: BPN; Domain: Basic Research |
| NANAKA ARIHARA (Graduate School of Humanities and Life Sciences Tokyo Kasei University), Makoto Suzuki (Faculty of Health Sciences, Tokyo Kasei University; Faculty of Systems Design, Tokyo Metropolitan University), Naoki Iso (Faculty of Health Sciences, Tokyo Kasei University), Takuya Matsumoto (Faculty of Health Sciences, Tokyo Kasei University), Kazuo Saito (Faculty of Health Sciences, Tokyo Kasei University; 3Faculty of Systems Design, Tokyo Metropolitan University), Jun'ichi Yamamoto (Tokyo Metropolitan University, Faculty of Systems Design) |
| Discussant: Stephanie Jimenez (University of Pittsburgh at Johnstown) |
| Abstract: Objective: Rhythmic bilateral movements are important for daily activities such as clapping, typing, and cooking. We hypothesized that low-frequency (5 Hz) and high-frequency (60 Hz), transcranial alternating current stimulation (tACS), synchronized with the cerebellum’s oscillations, would enhance cerebellar inhibition and improve the spatial accuracy of bilateral rhythmic movements. Methods: Fourteen healthy adults participated in this study. They were instructed to perform rhythmic hand behaviors with their right and left sides in response to metronome rhythms. 5 Hz, 60 Hz, or sham tACS was applied to the right cerebellum of the participants during these tasks. We tested MEP amplitude before and after tACS. Ethics: The intensity and frequency of tACS were maintained within the safety range confirmed by previous studies and approved by an ethical committee. Results: The right-hand spatial deviation was decreased by 5 Hz tACS. However, the left-hand rhythmic behavior was not significantly improved. MEP amplitude was also reduced by both 5 Hz and 60 Hz tACS. Conclusion: Low-frequency tACS over the right cerebellum modulates brain network activity and reduces spatial deviation in right-handed rhythmic behavior. The researchers hope that this neurobehavioral integration will lead to a new rehabilitation method. |
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| 62. Effects of Dietary Protein Restriction on Operant Behavior in Mice |
| Area: BPN; Domain: Basic Research |
| BRIANNA R LILLY (Louisiana State University), Christopher Morrison (Pennington Biomedical Research Center), Paul L. Soto (Louisiana State University) |
| Discussant: Thomas P. Byrne (Massachusetts College of Liberal Arts) |
| Abstract: Previous research in rodents has demonstrated that animals fed a low protein diet (~5% protein in diet) exhibit greater preference for protein solution relative to carbohydrate solution than animals fed a normal protein diet (~18-20% protein in diet; Hill et al. 2019). Further, research in hamsters and mice has also demonstrated that animals fed a low protein diet respond at higher rates under fixed ratio schedules of reinforcement in which protein solution is the consequence for ratio completion when contrasted with the response rates of animals fed a normal protein diet (DiBattista 1999; Khan et al. 2025). Most research on the behavioral effects of dietary protein restriction has focused on group comparisons rather than within-individual behavioral changes. The current study evaluated whether behavioral economic demand for protein solution varied as dietary protein levels were changed over time in individual mice. Data collection is ongoing but results of group and within-individual comparisons will be reported on demand for protein solution during periods of low and normal protein diet feeding. |
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| 63. Performance Variations in Attentional Tasks: A Study of Children From Mining Communities and Controls |
| Area: BPN; Domain: Applied Research |
| DIANA MEJÍA CRUZ (Instituto Tecnologico de Sonora), Laurent Avila-Chauvet (Technological Institute of Sonora) |
| Discussant: Stephanie Jimenez (University of Pittsburgh at Johnstown) |
| Abstract: The objective of this study is to analyze cognitive performance on an attentional task among children residing in communities affected by mining activities, specifically those exposed to lead during gestation. We employed the Attention subscale from the Neuropsychological Battery for Learning Disorder Assessment and evaluated lead levels in groundwater. Our findings indicate that children in the mining group exhibited significantly poorer performance compared to a control group, characterized by fewer correct responses, as well as higher rates of omissions and errors during the attentional task. Furthermore, a significant negative relationship was observed between the levels of lead exposure and attentional performance. This study highlights the impact of environmental toxicity on cognitive functioning in vulnerable populations and underscores the need for targeted interventions to support the development and educational outcomes of children in mining communities. By providing critical insights into the effects of lead exposure, this research aims to inform policymakers and educators about the unique challenges faced by these children and the importance of addressing their specific needs. |
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| 64. The Correspondence Between Caffeine Demand and Measures of Sleep, Anxiety, and Depression |
| Area: BPN; Domain: Applied Research |
| DAPHNE KWON KILBOURNE (UNCW), Peyton Farmer (UNCW), Wendy Donlin Washington (University of North Carolina Wilmington) |
| Discussant: Thomas P. Byrne (Massachusetts College of Liberal Arts) |
| Abstract: Caffeine is widely consumed worldwide, though its potential detrimental side effects are often overlooked. Excessive caffeine consumption can mimic or exacerbate symptoms of anxiety, and negatively impact sleep quality. The relationship between caffeine and depression is less clear. This online study was available through Qualtrics for undergraduate students using the psychology research portal (SONA system). Demographic information, caffeine use, caffeine expectancy, medications use, alcohol use, and caffeine serving size perceptions were measured. Anxiety levels were assessed using the Generalized Anxiety Disorder scale (GAD-7), while depressive symptoms were measured with the Center for Epidemiological Studies Depression Scale-Revised (CESD-R), both using Likert-scale responses. Sleep quality and average sleep duration were self-reported on a Likert scale. Caffeine consumption will be analyzed and compared between individuals who report high and low levels of depression, anxiety, and sleep. We predict a positive correlation between levels of anxiety and demand indices of Q0 and a because these measures describe the reinforcing value and intensity of demand for the substance. |
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