Developmental Neuroscience Commons^™

The Rpm-1/Phr Signaling Hub Modulates Tau-Induced Neurodegeneration Through Regulation Of Microtubule Stability And Mapk Pathways In C. Elegans, Xinxing Ding

Theses and Dissertations

Neurodegenerative diseases, including Alzheimer's disease and frontotemporal dementia, are characterized by the accumulation of pathological tau proteins and progressive neuronal loss. Although research regarding tau-mediated toxicity is extensive, the specific pathology that determine whether neurons maintain homeostasis or succumb to collapse under tau-induced stress remain incompletely elucidated. A central, yet still insufficiently understood, feature of these diseases is the disruption of the microtubule (MT) cytoskeleton . The PHR protein family is evolutionarily highly conserved; within this family, RPM-1 in C. elegans functions as an intracellular signaling hub that regulates axon development, synapse formation, axon termination, and various microtubule-associated processes. This …

Determinants Of Corporal Punishment And Severe Physical Punishment In Egypt: A Mixed-Methods Analysis For Child Protection Policy, Marwa Moustafa Nassef

Theses and Dissertations

Corporal punishment (CP) and severe physical punishment (SPP) remain a major public health, child rights, and child protection policy concern. In Egypt, despite legislative reforms, survey-weighted analysis of the 2021 Egypt Family Health Survey (EFHS) 2021 (CAPMAS, 2022) reveals prevalence rates of 60.5% for CP and 27.4% for SPP among children aged 1–14 (author’s calculations using EFHS-2021, n=7623), yet evidence distinguishing the determinants of routine corporal punishment from escalation to severe physical punishment remains limited in low- and middle-income contexts. Guided by Bronfenbrenner’s ecological framework, this mixed-methods study identifies key drivers of CP and its escalation to SPP among Egyptian …

Empowering Women: Understanding Neurological Changes In The Aging Brain, Joy Mckenzie

InnovateHER Meeting 2026

Women tend to have more neurological changes than men as they age starting in their mid-30s (Mosconi, 2024). While aging is a natural process, the neurological changes can impact a woman’s personal and professional quality of life (Faubion et al., 2023; Gravini, 2023). For years, women’s neurological symptoms have been ignored by being told that their experiences are normal and just a part of life (Haver, 2025). That narrative is starting to shift with the increased awareness of changes specific to women. There are resources to assess cognitive changes such as memory, processing speed, and word finding and strategies to …

Rhythms Of Hippocampal Function And Memory After Moderate Prenatal Alcohol Exposure, Lilliana May Sanchez

Psychology ETDs

Fetal Alcohol Spectrum Disorders involve morphologic and neurobiological abnormalities in offspring subjected to prenatal alcohol exposure. Although not as well studied as high exposure, moderate prenatal alcohol exposure represents the most common and undetected form in humans. While learning and memory deficits have been well characterized at the behavioral level in humans with Fetal Alcohol Spectrum Disorders and in animal models of moderate prenatal alcohol exposure, few studies have determined the circuit or systems level mechanisms of the behavioral deficits. A complete understanding of the neural bases of memory deficits after moderate prenatal alcohol exposure is needed to ultimately identify …

Invisible Shipwrecks And Neurological Endangerment: The Trade-Off In Seeking Asylum - Reframing The Neurobiological Cost Of Forced Migration, Eisha Giran

CISLA Senior Integrative Projects

Forced migration along the Spain–Morocco route represents one of the most visible humanitarian crises of the twenty-first century, yet its neurological dimensions remain insufficiently examined. This paper investigates how prolonged displacement and trauma reshape neural systems involved in stress regulation, memory, and emotional processing. It introduces the concept of neurological endangerment, defined as a condition of prolonged and inescapable threat exposure during forced migration in which stress-response systems remain chronically activated, opportunities for recovery are structurally constrained, and cumulative neurobiological risk persists beyond the period of immediate danger.

To address the gap between biological measurement and lived experience, this paper …

Neurobiological Mechanisms Of Attention In Adolescents, Virginia Clark

All Dissertations

Adolescence is a transformative developmental period characterized by profound biological, neurological, and behavioral changes. This dissertation investigates the neurobiological underpinnings of attention in adolescents, emphasizing how internal mechanisms influence and individually shape cognitive development through the endosystem. Rooted in the intersection of human development, learning sciences, and cognitive neuroscience, this work argues for a more integrated understanding of attention as a fundamental cognitive function for learning, one that is behaviorally seen but also biologically and neurologically driven. While developmental science has often emphasized external influences such as family, culture, and environment, this work centers on the adolescent’s internal biological systems …

Environmental Counseling As A Proposed Discipline And Its Associated Implications And Uses, Alexandria Rion

Honors Projects

Individuals interact with their environment daily, and whether they realize it or not, these interactions can impact their health. Understanding the health impacts associated with the environment is important to human health at both an individual and population level. I am proposing a new field of environmental counseling that would incorporate principles from a variety of practices into one comprehensive discipline that can be used to promote public health. By studying populations that have had negative environmental exposures and looking at their outcomes, I was able to apply principles of environmental counseling to help determine if it would in fact …

Optimizing Itpa R178c Assays Via Hplc, Jared J. Reisnouer, Wally D. Pines

2026 Symposium

Two of the major nucleotide bases in DNA and RNA (Adenine and Guanine) are derived from the purine Inosine Monophosphate (IMP). IMP may occasionally form the noncanonical nucleotide Inosine Triphosphate (ITP) within the cell and become incorporated into DNA during replication, leading to potentially lethal errors. To combat this, human cells produce the “housekeeping” enzyme Inosine Triphosphatase (ITPA) to revert ITP to IMP. A mutation of this protein that replaces the 178th amino acid Arginine with Cysteine (R178C) is associated with a fatal infantile encephalopathy. Previous assessments of enzyme-substrate binding and catalysis for ITPA variants have been run at a …

Epigenetic Mechanisms For Mediating The Transmission Of Prenatal Maternal Stress And Associated Neurodevelopmental Outcomes, Kaylee Vis

Senior Honors Theses

The hypothalamic-pituitary-adrenal (HPA) axis is the primary stress response system responsible for regulating cortisol release. During pregnancy, maternal stress can dysregulate the HPA axis, leading to elevated cortisol and corticosterone levels that impact fetal development. Excessive prenatal exposure to stress has been associated with alterations in fetal brain structure and function, increasing the risk for neurodevelopmental disorders such as autism spectrum disorder, attention-deficit/hyperactivity disorder, and anxiety. Emerging research supports the idea that these neurodevelopmental effects may be transmitted through epigenetic mechanisms. However, a gap remains in the literature regarding the specific mechanism of interaction between environmental stressors, heritable epigenetic information, …

Perinatal Inflammation And Oxidative Stress Alter Adult Rat (Rattus Norvegicus) Motor Behavior, Alexander Young

Honors College Theses

Recent evidence in comparative animal models suggests that early life exposure to elevated inflammation (via LPS exposure) and oxidative stress (via acetaminophen exposure) may synergistically interact to alter typical neurodevelopmental trajectories, resulting in lasting effects on both behavior and gut-brain neurochemistry. The current study observed emotional and motor behaviors and collected fecal-boli to measure Tyrosine (TE) levels in male and female Long-Evans (Rattus norvegicus) rats. Subjects were either treated with [1] saline [2] lipopolysaccharide (LPS) to introduce an inflammatory state, [3] acetaminophen (APAP) to introduce oxidative stress, or [4] a dual-hit of both LPS + APAP on postnatal day (PD) …

Eeg Signatures Of Motor Development In Early Childhood: A Systematic Review, Sonia Khurana, Ashwini Kulkarni, Thomas C. Bulea, Hunter J. Bennett

Rehabilitation Sciences Faculty Publications

Background

Early identification of motor developmental disorders is limited due to lack of objective neural markers that characterize typical neurodevelopmental patterns. This systematic review interprets and synthesizes existing evidence to propose a framework of EEG signatures associated with motor development in children aged 0-5 years, which may help inform future benchmarks for early assessment and intervention.

Methods

Following PRISMA guidelines, we searched published and gray literature across five databases between 2000 and 2025 (registered protocol). Included studies examined EEG during task-based, resting-state, or sleep studies linked to motor milestones, task performance, or standardized motor assessments. Study quality was assessed using …

Exploring Anticholinergic Neurotoxicity: Diphenhydramine's Impact On Neuro-2a Cell Morphology, Expression, And Viability, Jordan B. Mcintyre

Honors Undergraduate Theses

Anticholinergic medications, such as diphenhydramine (commonly known as Benadryl), are increasingly recognized for their association with cognitive impairment and neurodegenerative disease. These medications, which inhibit the action of acetylcholine, a neurotransmitter essential for the formation and utilization of the central and peripheral nervous system, have been implicated in conditions such as dementia and may impact fundamental cellular processes like neurogenesis and cell proliferation. This study investigates the effects of diphenhydramine on neurogenesis when introduced to Neuro-2a cells during differentiation. For all studies cells were plated on coverslips or in 6-well plates with differentiation media containing 0 ng/mL, 50 ng/mL, …

Micu2 Controls Mitochondrial Calcium Signaling And Migration In Neurons During Development, Elena Berezhnaya, Benjamín Cartes-Saavedra, Raghavendra Singh, Macarena Rodríguez-Prados, Orly Reiner, Fowzan S Alkuraya, György Hajnóczky

Department of Pathology, Anatomy, and Cell Biology Faculty Papers

Neurological disorders are linked to mitochondrial dysfunction and calcium overload. Mitochondrial calcium uptake is mediated by the mitochondrial calcium uniporter (mtCU), regulated by MICU1, which can be either homodimerized or heterodimerized with MICU2 or MICU3. Though MICU2 is scarce in the adult brain, MICU2 loss in patients leads to a neurodevelopmental disorder. We hypothesized that MICU2 is required for developmental calcium signaling and neuronal migration. MICU2 is present in the developing mouse brain but disappears by maturation, contrasting with other mtCU subunits that increase. MICU2 loss in mice does not affect cytoplasmic calcium but augments the mitochondrial matrix calcium rise …

An Analysis Of Developmental Changes In Twitch Patterning During Rem Sleep, Claire Wolfer-Jenkins, Taylor Svoboda

The Journal of Purdue Undergraduate Research

No abstract provided.

Ontogenetic Analysis Of Parasaurolophus Braincases (Ornithischia, Hadrosauridae) From The Kaiparowits Formation (Upper Cretaceous) Of Utah, Usa: Comparing Juvenile And Adult Morphology, Amanda "Billie" C. Guerrero

Electronic Theses, Projects, and Dissertations

This study documents the ontogenetic development of the braincase in Parasaurolophus, a lambeosaurine hadrosaurid dinosaur known for its distinctive cranial crest. Whereas the crest has been extensively examined for its roles in communication and display, the braincase remains less understood, despite its structural and functional relationship with the crest. This research compares the braincase morphology of a juvenile specimen (RAM 14000, "Baby Joe"), a subadult specimen (RAM 17000), and an adult P. tubicen (NMMNH P-25100), to investigate how developmental changes influenced sensory systems, neurocranial architecture, and biomechanical adaptations across ontogeny.

Detailed morphological analysis reveals progressive changes from juvenile to …

Developmental Effects On Zebrafish Embryos Exposed To Alcohol, Tamya Mchaney

Science University Research Symposium (SURS)

Zebrafish are a good organism model due to their similarities with human biology. The transparency of their embryos allows for an easier view to see the developmental stages of the embryos, and easily and accurately note any mutations or defects in any of the embryos. In addition, they make excellent candidates to track potential effects that mirror human embryos with ethanol and alcohol will have on their developmental stages. The aim of this study was to measure the genetic size developmental differences of the embryo’s lens, eyes, and heart that are given 1% alcohol and 2% alcohol. This study’s experimental …

Appearance Over Function - The Impact Of Long-Term Oral Contraceptive Use On Brain Development, Breast Tissue Composition, And Future Lactation Outcomes, Fiona M. Wang

Dissertations

This integrative review examines the long-term effects of combined oral contraceptive (COC) use beginning in puberty on brain development, breast tissue composition, and future breastfeeding outcomes. Puberty is a critical developmental stage during which hormonal changes significantly impact the neurological and reproductive systems. The introduction of synthetic estrogen and progestin through COC use during this time may disrupt natural hormonal pathways, potentially altering neuroendocrine signaling and breast tissue maturation. Such changes may have lasting consequences, including impaired milk production, a weakened milk ejection reflex, disrupted maternal-infant bonding, and reduced overall breastfeeding success. The review synthesizes findings from endocrinology, neuroscience, and …

The Role Of Androgen Receptor And B2/Alu Sine Rna Interaction In Hippocampal Dendritic Development, Troy A. Richter

Graduate Doctoral Dissertations

Once dismissed as “junk”, transposable elements have recently gained recognition for their regulatory roles, especially in the brain. During development, circulating androgens promote proper morphological development of hippocampal neurons. We and others have shown that murine B2 SINE RNA is a regulator in the rodent hippocampus. It is unknown, however, if B2 is necessary for the proper development of hippocampal neurons. This dissertation investigates the role of murine B2 in the development of primary hippocampal neurons in combination with androgen treatment. We first examined the role of ALU SINE and androgen receptor in a prostate cancer cell model and found …

Sex-Specific Effects Of Early-Life Unpredictability On Hippocampal And Amygdala Responses To Novelty In Adolescents, Elysia Poggi Davis, Bianca T. Leonard, Robert J. Jirsaraie, David B. Keator, Steven L. Small, Curt A. Sandman, Victoria B. Risbrough, Hal S. Stern, Laura M. Glynn, Michael A. Yassa, Tallie Z. Baram, Jerod M. Rasmussen

Psychology Faculty Articles and Research

Background

Unpredictable childhood experiences are an understudied form of early-life adversity that impact neurodevelopment. The neurobiological processes by which exposure to early-life unpredictability impact development and vulnerability to psychopathology remain poorly understood. In the current study, we investigated the sex-specific consequences of early-life unpredictability on the limbic network, focusing on the hippocampus and the amygdala.

Methods

Participants included 150 youths (54% female). Early-life unpredictability was assessed using the Questionnaire of Unpredictability in Childhood (QUIC). Participants engaged in 1 or more task–functional magnetic resonance imaging scans between the ages of 8 and 17 (223 total observations) measuring blood oxygen level–dependent (BOLD) …

Neurodevelopmental And Environmental Mechanisms Of Invasion, Proliferation, And Tumor Cell Fate Specification In Glioblastoma, Bianca Lynn Myers

Biomedical Sciences ETDs

Glioblastomas (GBMs) are the most aggressive primary brain tumors, and despite over 50 years of research efforts, the median survival remains at 14 months post-diagnosis. The current standard of care consists of maximal surgical resection radiotherapy with concurrent chemotherapy using temozolomide. However, the highly proliferative and invasive nature of GBM cells renders total resection nearly impossible as tumor cells invade the surrounding healthy tissue. The molecular and environmental drivers of these tumorigenic phenotypes are largely unknown. Here, we demonstrate that the neurodevelopmental transcription factor ASCL1 enhances tumor cell proliferation and invasion while activating the expression of a neural stem cell …

Characterizing The Medial Forebrain Bundle In Adolescents With Anhedonic Depression, Tina Nguyen

Biological Sciences Undergraduate Honors Theses

Adolescent depression has quickly grown in prevalence, yet the underlying neuropathology remains poorly understood. Anhedonia–the diminished ability to experience pleasure–is a core symptom of melancholic depression. Early identification of biomarkers associated with anhedonic depression could help mitigate the severity of the disorder by enhancing treatment efficacy. Blunted functionality of the nucleus accumbens (NAcc), the reward center of the brain, and abnormal dopaminergic activity in the ventral tegmental area (VTA) have both been linked to depression. Furthermore, glutamatergic input from the hypothalamus modulates the VTA which in turn, downregulates dopamine release in the NAcc. However, there is limited evidence supporting that …

Poor Sleep Quality Is Associated With Decreased Structural Coherence Of Mesolimbic Dopamine Projections In Children, William A. Walker

Psychological Science Undergraduate Honors Theses

Insomnia is the second most common mental disorder that affects approximately 10% of the population. An additional one-third of the population experiences occasional symptoms of insomnia like difficulty falling asleep or staying asleep. Sleep quality is also a key indicator of overall mental and physical health; however, researchers have only begun to study the effects of the structure of the mesolimbic pathway on sleep cycle regulation and quality. Emerging research suggests that mesolimbic dopamine projections from the Ventral Tegmental Area (VTA) to the Nucleus Accumbens (NAcc) play a role in sleep-wake regulation. In this study, I analyzed data from the …

Atypical Morphometry And Connectivity Of The Cortico-Striatal-Thalamo-Cortical Circuit In Children And Adolescents With Chromosome 22q11.2 Deletion Syndrome: A Population At Ultra-High Risk For Developing Obsessive-Compulsive And Schizophrenia Spectrum Disorders, Amanda I. Rowan

LSU New Orleans Theses and Dissertations

Chromosome 22q11.2 deletion syndrome (22q11.2DS) is a complex neurodevelopmental disorder associated with serious medical, cognitive, and psychiatric conditions, including significantly elevated risk for obsessive-compulsive (OCD) and/or schizophrenia spectrum disorders (SCZ). The cortico-striato-thalamo-cortical (CSTC) neural circuit is critical for cognitive and emotional processing. Dysfunction of the CSTC circuit is implicated in the etiopathology of both OCD and SCZ but has not been specifically examined in individuals with 22q11.2DS. This study used structural magnetic resonance imaging (MRI) and diffusion tensor imaging (DTI), along with standardized psychological and cognitive measures, to investigate atypical morphometry and white matter connectivity within CSTC-related brain regions in …

Rod Photoreceptor Regeneration In A Zebrafish Model With Retinitis Pigmentosa, Eyad Shihabeddin

Dissertations and Theses (Open Access)

A cellular hallmark of inherited retinal degenerative diseases is progressive loss of photoreceptors until one is completely blind. Unlike mammalian models, Zebrafish have the ability to naturally regenerate their neurons after injury or disease is detected. We have generated a zebrafish model with the most common autosomal dominant form of the inherited retinal degenerative disease known as Retinitis Pigmentosa. We utilize immunohistochemistry, single-cell RNA sequencing, several analysis tools, behavioral assays and oligonucleotides to characterize our zebrafish model and identify the transcription factors necessary for rod photoreceptor regeneration. We show that our zebrafish model has continuous degeneration and regeneration of rod …

Adverse Cognitions: The Impact Of Childhood Trauma On Brain Development, Faith Salamone

2025 Student Academic Showcase

The effect of adverse experiences in childhood have been known to create lasting difficulties, even in adulthood. While it can be hard to determine the effects of childhood trauma on the brain, many studies have identified areas that appear to be negatively impacted by these adverse childhood experiences. This paper is a meta-analysis of eight articles that have attempted to investigate the effects of childhood trauma on the developing brain. These articles are specifically investigating the effects of childhood physical and/or sexual abuse. The areas that will be discussed in this paper are the prefrontal cortex, corpus callosum, the limbic …

Neural Efficiency Hypothesis In Motor Actions; Spectral Power Of Balancing Ballet Dancers, Carter G. Disantis

Senior Theses

Reduced activity observed during functional imaging of motor experts led to the Neural Efficiency Hypothesis (NEH) in motor skills, which posits that expert performers use fewer neural resources during motor execution than novices, reflecting greater neural efficiency.

This pilot study compared EEG recordings from five novices and four expert ballet dancers during standing and one-leg balance. Whole-brain theta (4–8 Hz) and alpha (8–12 Hz) power were quantified, and topographic maps were generated. In addition to testing the primary hypotheses, the experimental design was evaluated as a practical and scalable approach for investigating the NEH in motor skills. Novices showed significantly …

Early Motor And Language Development In Infants At Elevated Likelihood For Autism, Natalie C. Deal

Senior Theses

During the early stages of infant development, various emerging skills set the foundation for more complex abilities. One such connection is the development of motor skills, which play a crucial role in influencing language outcomes later in the infants' first year. Although these developmental cascades are well understood in typically-developing populations, less is known about the cascade in infants at elevated likelihood for autism spectrum disorder (ASD). Many infants who are later diagnosed with ASD have motor delays or language delays, suggesting that the cascade from motor to language may not be typical in this population. Additionally, little is known …

Data Reporting Quality And Semantic Interoperability Increase With Community-Based Data Elements (Codes). Analysis Of The Open Data Commons For Spinal Cord Injury (Odc-Sci), Anushka Sheoran, Kenneth A. Fond, Lex Maliga Davis, J. R. Huie, Romana Vavrek, P. J. Axtman, Vance P. Lemmon, John L. Bixby, Ubbo Visser, John C. Gensel, Karim Fouad, Adam R. Ferguson, Jeffrey S. Grethe, Anita Bandrowski, Maryann E. Martone, Abel Torres-Espin

Neurology Faculty Publications

Data interoperability is crucial for effectively combining data for scientific inquiry. To facilitate interoperability, data standards such as a common definition of variables are often developed. The Open Data Commons for Spinal Cord Injury (odc-sci.org) has established an initial set of community-based data elements (CoDEs)—a minimal set of variables for sharing—to promote data interoperability in SCI research, aligning with FAIR (Findable, Accessible, Interoperable, and Reusable) data principles. We sought to understand the use of CoDEs by the SCI community to inform current standards adherence and future standards development. We systematically analyzed 39 public datasets in relation to 17 required CoDEs …

Neural Correlates Of Infant Attention During Initial Exposure To Own- And Other-Race Faces, Ashley N. Barrows, Lauren Slivka, Kenna Clayton, Kelly Roth, Greg Reynolds

Pursuit - The Journal of Undergraduate Research at The University of Tennessee

Past research has shown that infants raised in a racially homogenous environment demonstrate an advantage for processing own-race faces at the individual level in comparison to other-race faces (Lewkowicz, 2014; Mauer & Werker, 2014; Quinn, Lee, & Pascalis, 2018). This advantage for processing own-race faces develops across infancy and has been referred to as the own-race bias (e.g., Anzures, Quinn, Pascalis, Slater, Tanaka, & Lee, 2013). The processes that lead to development of the own-race bias are complex and not fully understood. Recent work suggests that by 10 months of age, differences in own- and other-race face processing may be …

Neurophysiological Indices Of Lexical Tone Processing In Children With Different Language Background, Andres Felipe Diaz

Theses and Dissertations

The development of lexical tone processing in children is shaped by both language experience and acoustic salience. While mismatch responses (MMRs) and late negativity (LN) components of event-related potentials (ERPs) have revealed early sensitivity to lexical tone in monolingual children, the timeline for achieving adult-like neural responses—particularly for acoustically distinct versus subtle tone contrasts— remains unclear. Moreover, little is known about how bilingual language experience, especially with tonal versus non-tonal home languages, modulates this neural processing. This study employed a passive multi-oddball paradigm using Mandarin Tone 3 (low dipping) as the standard, and Tone 1 (high level) and Tone 2 …