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Articles 1 - 20 of 20
Full-Text Articles in Developmental Neuroscience
Biophysical Model Of Retraction Motor Neurons And Their Modification By Operant Conditioning, Maria Rasheed
Biophysical Model Of Retraction Motor Neurons And Their Modification By Operant Conditioning, Maria Rasheed
Dissertations & Theses (Open Access)
Operant conditioning (OC) is a form of associative learning in which an animal modifies its behavior based on the consequences that follow that behavior. Despite its ubiquity, the underlying mechanisms of OC are poorly understood. Insights into the mechanisms of OC can be obtained by studying Aplysia feeding behavior as it can be modified by OC. This behavior is mediated by a central pattern generator (CPG) network in the buccal ganglia that contains a relatively small number of neurons. This CPG generates rhythmic motor patterns (BMPs) that move food into the gut by closing a tongue-like structure (i.e., radula) during …
Brainwaves, Memory, And Reward, Rebecca Mccune
Brainwaves, Memory, And Reward, Rebecca Mccune
Dissertations, Theses, and Capstone Projects
The development of effective educational curricula for enhancing learning involves the crucial consideration of effort and rewards. In the realm of education, teachers commonly employ rewards as motivational tools. Traditionally, these rewards are given to students as a recognition of their successful performance. However, a thought-provoking idea emerges: What if we were to extend rewards to students not solely based on accurate answers, but also on the effort they invest, even in cases where their actual response might be incorrect? Our study explores the potential impact of this approach on the way information is absorbed and subsequently retained, specifically focusing …
Adolescents With Family History Of Alcohol-Use Disorders Have Reduced Structural Coherence Of Anterior Insula To Nucleus Accumbens Tract, Grace Wood
Psychological Science Undergraduate Honors Theses
Genetics play a significant role in predisposition towards alcohol use disorders. Analyzing the neural phenotypes related to alcohol use disorder development could allow researchers to predict one’s predisposition. The anterior insula (AIns) contributes to binge drinking tendencies while exhibiting downstream signaling towards the nucleus accumbens (NAcc). Recent research has examined this relationship simultaneously with alcohol consumption, but the genetic effect of the AIns and NAcc functional relationship prior to alcohol consumption has yet to be examined. In this study, we used data from the Adolescent Brain Cognitive Development (ABCD) study to analyze the structural coherence of the AIns to NAcc …
The Genomics Of Autism-Related Genes Il1rapl1 And Il1rapl2: Insights Into Their Cortical Distribution, Cell-Type Specificity, And Developmental Trajectories, Jacob Weaver
MUSC Theses and Dissertations
Neuropsychiatric disorders have a significant impact on modern society. These disorders affect a large percentage of the population: schizophrenia has a world-wide prevalence of 1% and autism spectrum disorders (ASD) affects 1 in 59 school-aged children in the US. There is substantial evidence that most neuropsychiatric disorders have a genetic component. Thus, with the advent of high throughput sequencing much effort has gone into identifying genetic variants associated with these disorders. The emerging picture from these studies is a complex one where hundreds of genes with small effects interact with a varied landscape of common variants to result in disease. …
Beginnings, Elizabeth Becker
Beginnings, Elizabeth Becker
Dance (MFA) Theses
Researcher Elizabeth Becker uses personal experiences of pregnancy alongside scholarly research on the developmental movement patterns of the human embryo, fetus, and newborn’s first year of life to explore the multiplicity of these movement patterns within and outside the womb. Becker explores the relationship between the fertilization, germinal, embryonic, and fetal stages in relation to a newborn and its mother. These movement patterns within the beginning stages of life are valuable to research because they simulate neurodevelopmental patterns, which help wire the central nervous system in early childhood. These movements also help lay the foundation for sensory-motor development and life-long …
Estrogen Disruption Of Hypothalamic Neural Activity, Princess Dickson
Estrogen Disruption Of Hypothalamic Neural Activity, Princess Dickson
Cal Poly Humboldt theses and projects
The brain is highly dependent on the endocrine system for proper neurodevelopment, as it plays a key role in many biological processes. Bisphenol A is a chemical found in plastics that has the potential to mimic the effects of Estrogen in the body, at least weakly. People interact with plastic that contains BPA regularly, and people are at risk for exposure even before being born. The abundance of BPA, along with other exogenous estrogens, makes examining the relationship between early exposure and changes in brain activity imperative. The current study aims to establish a relationship between disrupted estrogen function and …
Neurocounseling And The Counseling Profession: Integrating Neuroscience Into The Practice Of Counseling, Sherri Clark
Neurocounseling And The Counseling Profession: Integrating Neuroscience Into The Practice Of Counseling, Sherri Clark
Dissertations, Theses, and Projects
Neurocounseling integrates Neuroscience into mental health counseling by using psychoeducation, teaching, and illustrations as well as other forms of therapy (CBT, Interpersonal Psychotherapy, Narrative Therapy, etc.) to assist clients in understanding the neurological basis of many mental and behavioral health concerns. Clients can benefit from Neurocounseling as they gain a more comprehensive understanding of the central nervous system and brain function in connection to the body, cognition, mood, and behaviors, also known as the mind and body connection. Neuroplasticity and neurogenesis allow us to understand the brain’s amazing capability to grow and change. Understanding neuroscience allows for more integrated case …
Reorganization Of The Human Ventricular-Subventricular Zone Neural Stem Cell Niche In Fetal-Onset Hydrocephalus, Saurabh Kumar
Reorganization Of The Human Ventricular-Subventricular Zone Neural Stem Cell Niche In Fetal-Onset Hydrocephalus, Saurabh Kumar
University Scholar Projects
Fetal-onset hydrocephalus is a relatively common birth defect occurring in 1-2 cases per thousand births and is characterized by abnormally expanded brain ventricles. Current diagnosis for this complex pathology often involves relatively simple metrics and heavy reliance on clinician experience over objective measures. Those affected often suffer chronic headaches and cognitive deficits and may present with a bulging skill. Shunting is considered the standard treatment for communicating hydrocephalus (i.e. cerebrospinal fluid flow is physically unobstructed in the ventricular system). Shunting remains a highly invasive procedure often performed during the critical period of infancy and has a high failure rate of …
The Effect Of Physical Activity And S-Equol On Neurogenesis In The Hiv-1 Transgenic Rat, Jeremy M. Lapointe
The Effect Of Physical Activity And S-Equol On Neurogenesis In The Hiv-1 Transgenic Rat, Jeremy M. Lapointe
Senior Theses
The aim of this thesis is to investigate the effect of physical activity and the administration of s-equol on rates of neurogenesis in HIV-1 transgenic rats. HIV-1 is a neurodegenerative disease that leads to the wide range of cognitive impairment described as HAND. Neurogenesis is a newly discovered process that involves the birth of new neurons during our adult life within the dentate gyrus of the hippocampus. Therefore, inducing neurogenesis may be a proper therapeutic that can mitigate some of the cognitive destruction seen as a result of HIV-1 infection. Physical activity has shown to increase the rate of neurogenesis …
Effect Of Reduced Neurogenesis On Microglial Activation, Amelia Smith
Effect Of Reduced Neurogenesis On Microglial Activation, Amelia Smith
Honors Scholars Collaborative Projects
The geriatric population of America has grown exponentially in the past century. Health degradations and expensive medical care are characteristic of this population with many of these costs due to age-related cognitive decline. It is essential to completely understand the mechanisms of normal and abnormal aging in the search for treatments for cognitive decline. A reduction of neurogenesis is a common factor in aging, but this reduction is even more drastic in individuals experiencing cognitive decline. It is unclear what effect reduced neurogenesis has on the extracellular environment, including glial cells. In particular, changes in microglial activation could be related …
The Association Of Late-Life Depression, Cognitive Functioning, And Sleep Disorder In Aging, Jessica B. Aronis
The Association Of Late-Life Depression, Cognitive Functioning, And Sleep Disorder In Aging, Jessica B. Aronis
Electronic Theses and Dissertations
The continuing growth in the demographic of aging individuals in the United States creates concern for diseases of aging that are chronic, notably unipolar depressive disorders. The high rates of depression in the aging population are a concern because of the strong association between late-life depression and cognitive impairment. Poor cognitive functioning is a hallmark of aging related neurological disorders, the most prevalent being Alzheimer’s Disease (AD). Sleep disorder is a core symptom of depression, and is definitively associated with the development of mild cognitive impairment (MCI), the prodrome of AD. MCI is also characterized by similar types of sleep …
Investigation Of Even-Skipped, A Developmentally-Regulated Gene Controlling Neural Segmentation In Dragonflies, Kathryn Bangser
Investigation Of Even-Skipped, A Developmentally-Regulated Gene Controlling Neural Segmentation In Dragonflies, Kathryn Bangser
Honors Theses
A comprehensive understanding of the genetic mechanisms underlying pattern formation and neurogenesis is necessary in order to trace the evolutionary history of insect embryogenesis.
One of the most important processes of embryogenesis is the organized pattern formation that allows for proper body segmentation and neural development. Proper segmentation, which relies on a series of specific gene expressions, is necessary for the development of an operational nervous system. Even-skipped (eve), one such regulatory gene, has been studied extensively in certain model organisms, and theories regarding the evolution of its functional role could be further elucidated by visualizing its expression …
The 5-Ht1a-R Knockout Mouse As A Model Of Later Life Anxiety Disorders: Implications For Sex Differences, Tatyana Budylin
The 5-Ht1a-R Knockout Mouse As A Model Of Later Life Anxiety Disorders: Implications For Sex Differences, Tatyana Budylin
Dissertations, Theses, and Capstone Projects
Anxiety affects nearly twice as many women as it affects men across all cultures and economic groups. Importantly, girls have a higher chance of inheriting anxiety disorders than boys, and many anxiety disorders appear at a very young age. However, little is known about sex differences in brain and behavioral development and how they relate to anxiety in adulthood. Serotonin 1A receptor (5-HT1A-R) mediated signaling has been implicated in depression and anxiety, however most studies that focus on the involvement of the 5-HT1A-R have been conducted in adults. Little is known about how the 5-HT1A …
The Role Of Ash1l During Human Neurodevelopment, Anna Bagnell
The Role Of Ash1l During Human Neurodevelopment, Anna Bagnell
Senior Theses
Autism spectrum disorders (ASD) are associated with defects in neuronal connectivity and are highly heritable. A significant proportion of ASD cases are of complex genetic etiology; complexity which might reflect the impact of gene-environment interactions. However, there is a gap in our understanding of the mechanisms that underlie the gene-environment interaction in autism complex etiology. Genome wide association studies in large ASD cohorts identified high risk variants associated with autism in genes that regulate histone modifications and remodel chromatin. These findings highlight the relevance of chromatin regulatory mechanisms in the pathology of ASD. Changes in Histone H3 methylation have been …
Characterizing The Cellular Nature Of The Physical Interactions Necessary For Collective Neuron Migration, Rebecca Vareed
Characterizing The Cellular Nature Of The Physical Interactions Necessary For Collective Neuron Migration, Rebecca Vareed
Theses and Dissertations
Neuronal migration is an essential process in the development of the nervous system. Neurons are born in one location and migrate sizable distances to their final location. In many other developmental processes, cells migrate as collectives, where the migration of one cell influences the migration of another cell; this process has yet to be shown in the developing central nervous system. Using the conserved tangential migration of facial branchiomotor neurons (FBMNs), I aim to determine the nature of the collective migration in the developing nervous system. Here, two models of FBMN collective migration are tested: the “Pioneer” model, where following …
Relationships Between Age And White Matter Integrity In Children With Phenylketonuria, Erika M. Wesonga
Relationships Between Age And White Matter Integrity In Children With Phenylketonuria, Erika M. Wesonga
Arts & Sciences Electronic Theses and Dissertations
Objective: Phenylketonuria (PKU) is a hereditary metabolic disorder associated with cognitive compromise. Diffusion tensor imaging (DTI) has allowed detection of poorer microstructural white matter integrity in children with PKU, with decreased mean diffusivity (MD) in comparison with healthy children. However, very little research has been conducted to examine the trajectory of white matter development in this population. The present study investigated potential differences in the developmental trajectory of MD between children with early- and continuously-treated PKU and healthy children across a range of brain regions.
Methods: Children with PKU (n = 31, mean age = 12.2 years) were …
Prenatal Predictors Of Infant Self-Regulation: The Contributions Of Placental Dna Methylation Of Nr3c1 And Neuroendocrine Activity, Elisabeth Conradt, Mary Fei, Linda Lagasse, Edward Tronick, Dylan Guerin, Daniel Gorman, Carmen J. Marsit, Barry M. Lester
Prenatal Predictors Of Infant Self-Regulation: The Contributions Of Placental Dna Methylation Of Nr3c1 And Neuroendocrine Activity, Elisabeth Conradt, Mary Fei, Linda Lagasse, Edward Tronick, Dylan Guerin, Daniel Gorman, Carmen J. Marsit, Barry M. Lester
Dartmouth Scholarship
We examined whether placental DNA methylation of the glucocorticoid receptor gene, NR3C1 was associated with self-regulation and neuroendocrine responses to a social stressor in infancy. Placenta samples were obtained at birth and mothers and their infants (n = 128) participated in the still-face paradigm when infants were 5 months old. Infant self-regulation following the still-face episode was coded and pre-stress cortisol and cortisol reactivity was assessed in response to the still-face paradigm. A factor analysis of NR3C1 CpG sites revealed two factors: one for CpG sites 1-4 and the other for sites 5-13. DNA methylation of the factor comprising NR3C1 …
Methods For Integrative Analysis Of Genomic Data, Paul Manser
Methods For Integrative Analysis Of Genomic Data, Paul Manser
Theses and Dissertations
In recent years, the development of new genomic technologies has allowed for the investigation of many regulatory epigenetic marks besides expression levels, on a genome-wide scale. As the price for these technologies continues to decrease, study sizes will not only increase, but several different assays are beginning to be used for the same samples. It is therefore desirable to develop statistical methods to integrate multiple data types that can handle the increased computational burden of incorporating large data sets. Furthermore, it is important to develop sound quality control and normalization methods as technical errors can compound when integrating multiple genomic …
Empathy-Based Conservation: An Interdisciplinary Approach To Conservation Policy And Decision-Making, Kaitlyn Delashmutt
Empathy-Based Conservation: An Interdisciplinary Approach To Conservation Policy And Decision-Making, Kaitlyn Delashmutt
Department of Environmental Studies: Undergraduate Student Theses
In the late 20th century, neuroscientists in Italy discovered a neuron in the brain capable of mentally mimicking the emotions derived from the actions of others (Rizzolatti and Craighero, 2004). It is the process that makes your elbow ache when someone else knocks their elbow on the counter or the uncontrollable smile that creeps up when someone smiles at you. No questions asked, people intuitively sense what others are feeling. The old school of thought was that humans deduced through logic and reason the actions of others and interpreted the emotions through a rational process (Carew et al, 2008). …
Relative Dependence Of Neural Plasticity On Age And Activity In The Bumblebee (Bombus Huntii), Geoffrey Nielsen
Relative Dependence Of Neural Plasticity On Age And Activity In The Bumblebee (Bombus Huntii), Geoffrey Nielsen
Summer Research
Neural Plasticity is one of the most fascinating and complex aspects of neuroscience. Due to the complexity of neural plasticity mechanisms, simple models are used to study neural plasticity. The bumblebee, Bombus huntii provides an ideal model organism with which to study neural plasticity, particularly the way it is affected by age and activity1. The Mushroom Body is the portion of the B. huntii brain that is responsible for higher order sensory integration and experience related learning so it will be the focus of this study.