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Articles 1 - 30 of 351
Full-Text Articles in Neuroscience and Neurobiology
Cultivating Excellence: A Literature Review On Harnessing The Power Of The Gut Microbiome For Athletic Performance, Maya Katharine Dean
Cultivating Excellence: A Literature Review On Harnessing The Power Of The Gut Microbiome For Athletic Performance, Maya Katharine Dean
Honors Projects
The interplay between our gut microbiome and health is immense. This literature review analyzes the current research assessing the interplay between gut microbiome and athletic performance. Knowing how to improve gut microbial diversity via nutrition and supplementation can take athletic performance to the next level; namely improvements in immune, mental, and physical health.
Dissecting The Tissue-Specific Contributions To Seizures, Cardiorespiratory Dysfunction, And Sudden Death In The Kv1.1 Mouse Model Of Epilepsy Using Conditional Knockout Approaches, Kelsey Paulhus
Biological Sciences Theses and Dissertations
Sudden unexpected death in epilepsy (SUDEP), the primary cause of mortality in epilepsy, remains poorly understood. Studies suggest seizures may trigger dangerous signals affecting the heart and lungs leading to collapse and death. The Kv1.1 deficiency mouse model mirrors clinical SUDEP cases, showing spontaneous seizures, cardiorespiratory issues, and premature death. However, this model lacks regional specificity in Kv1.1 deletion, hindering insights into SUDEP’s mechanisms and anatomical substrates.
This dissertation employs three distinct conditional knockout (cKO) techniques to investigate the individual roles for the forebrain, brainstem, and heart in SUDEP related phenotypes. The findings reveal that the forebrain alone can trigger …
Associations Between Early Childhood Sleep, Memory Function, And Brain Development Across The Nap Transition, Sanna Lokhandwala
Associations Between Early Childhood Sleep, Memory Function, And Brain Development Across The Nap Transition, Sanna Lokhandwala
Doctoral Dissertations
Preschool-age children often distribute their sleep across a midday nap and overnight sleep. Skipping the nap is suggested to increase the duration and depth of deep sleep (i.e., slow wave activity; SWA). Moreover, missing the midday nap has been shown to impair learning processes. This may be because children’s brains at this point in development are immature, necessitating the intervening nap period to strengthen memories before they are forgotten. Nonetheless, at some point during the preschool years, many children begin transitioning naturally out of napping. It is unclear whether the memory benefits of overnight SWA after a skipped nap depend …
Changes In Flanker Task Performance Following High-Intensity Exercise In Endurance Athletes, Felix E. Cottet-Puinel
Changes In Flanker Task Performance Following High-Intensity Exercise In Endurance Athletes, Felix E. Cottet-Puinel
Dissertations, Master's Theses and Master's Reports
Executive function performance following acute aerobic exercise can be influenced by multiple variables. However, little is known about the lasting effects of these exercise-induced changes. This study aimed to determine the extent to which exercise intensity impacts executive function. 14 young endurance-trained adults (5 female, 9 male) performed an Eriksen flanker task before and immediately after running high-intensity until failure and isochronal moderate-intensity (~12 min). Pre- to post-exercise-induced changes in reaction time (ms), accuracy (%), and self-reported mental effort (1-9 rating) were analyzed by overall tasks and through tasks subsections. Results showed improvement in reaction time following high- and moderate-intensity …
Physically, Mentally, And Emotionally Drained, Kaitlin Medina
Physically, Mentally, And Emotionally Drained, Kaitlin Medina
Regis University Student Publications (comprehensive collection)
Hormonal cycles play an essential role in the development and maturation of young boys and girls into men and women. As teenagers enter their late teens and early twenties, their hormonal cycles are primarily responsible for functions related to fertility and hormone production. During this period of time, these men and women are often in their collegiate years. Overall, the college experience is enjoyable for many students, but it can also be a very stressful time due to a difficult class load and the students’ need to balance their academic, social, and personal lives. Recent studies have analyzed the effects …
Structural And Functional Consequences Of Pde6 Prenylation In Rod And Cone Photoreceptors, Faezeh Moakedi
Structural And Functional Consequences Of Pde6 Prenylation In Rod And Cone Photoreceptors, Faezeh Moakedi
Graduate Theses, Dissertations, and Problem Reports
Phosphodiesterase-6 (PDE6) serves as a pivotal component in the phototransduction pathways of both cone and rod photoreceptors. In cones, PDE6 consists of tetrameric subunits: inhibitory (γ') and catalytic (α'). The catalytic subunit, PDE6α', contains a C-terminal prenylation motif. Deletion of this motif is associated with achromatopsia (ACHM), a form of color blindness. The mechanisms underlying the disease and the roles of PDE6 lipidation in vision remain elusive. Meanwhile, rod PDE6 is composed of α and β catalytic subunits and γ inhibitory subunits, with alterations in the C-terminal "prenylation motif" of PDE6β linked to retinitis pigmentosa (RP) pathology. In this comprehensive …
Estradiol’S Role In Timely Puberty Onset In The Ewe, Eliana Gerardine Aerts
Estradiol’S Role In Timely Puberty Onset In The Ewe, Eliana Gerardine Aerts
Graduate Theses, Dissertations, and Problem Reports
In female sheep, the release of gonadotropin-releasing hormone (GnRH) from the hypothalamus triggers luteinizing hormone (LH) to be released from the pituitary. Luteinizing hormone, in turn, acts on the ovaries to elicit estradiol (E2) release. E2 acts in a negative feedback manner to control the amount of LH released. The increase in LH release that drives puberty onset results from a decrease in sensitivity to E2 as the animal ages. However, the neural mechanisms mediating this change in sensitivity are not known, as is where in the hypothalamus E2-negative feedback occurs. In the arcuate …
Utilizing Ai Integrated Neuroimaging Technology To Expand Upon Machine Learning In Positron Emission Tomography Technology With The Aim Of Detecting Amyloid Beta Biomarkers Early In The Onset Of Alzheimer's., Ethan S. Terman
Undergraduate Research Posters
Early intervention in Alzheimer's is vital for treatment. The earlier a professional can detect symptoms and make a diagnosis the earlier a prognosis can be implemented. With the prevalence of data in our day-to-day world combined with Artificial intelligence (AI), utilizing both for machine learning can pave the way for more accurate and efficient detection of Alzheimer's and other neurodegenerative diseases. AI combined with Machine learning (ML) increases diagnostic efficiency and reduces human errors, making it a valuable resource for physicians and clinicians alike. With the increasing amount of data processing and image interpretation required, the ability to use AI …
Evaluating The Potential Of Using Eeg To Monitor Cognitive Workload In Simulated Suborbital Flight, Erik Seedhouse Phd
Evaluating The Potential Of Using Eeg To Monitor Cognitive Workload In Simulated Suborbital Flight, Erik Seedhouse Phd
Journal of Aviation/Aerospace Education & Research
Mental workload can be assessed using electrophysiological measures of brain activity, such as electroencephalography (EEG). EEG signals reveal cortical electrical activity. This cortical activity was recorded using specialized headsets. The focus of this research was to study cognitive performance (CP) in four pilots during simulated suborbital flights under nominal day and night profiles and under contingency day and night profiles. A 14-channel EMOTIV EEG headset measured the participants' brain activity while they flew simulated flights in a Suborbital Spaceflight Simulator (SSFS). Several sessions of EEG data were recorded from each subject, and feature extraction was applied. Data revealed that real-time …
Puberty-Associated Changes In Kiss1r, Mc3r, And Mc4r In The Ewe, Ashleigh Caitlyn Thomson
Puberty-Associated Changes In Kiss1r, Mc3r, And Mc4r In The Ewe, Ashleigh Caitlyn Thomson
Graduate Theses, Dissertations, and Problem Reports
The neural mechanisms that control the onset of puberty are not completely understood. In livestock, the onset of puberty relies on an increase in gonadotropin releasing hormone (GnRH) and luteinizing hormone (LH). Kisspeptin, neurokinin B, and dynorphin neurons (KNDy) and their receptors, Kiss1r, NK3R, and KOR, respectively, are important regulators of puberty. Previous data from our laboratory has shown that KNDy neurons may be responding to other inputs, including the melanocortin system, that will affect the timing of puberty. Given this, we examined kisspeptin receptor (Kiss1r) mRNA expression in GnRH neurons as well as examining melanocortin 3 and 4 receptor …
The Importance Of Contrast Sensitivity, Color Vision, And Electrophysiological Testing In Clinical And Occupational Settings, Frances Silva
The Importance Of Contrast Sensitivity, Color Vision, And Electrophysiological Testing In Clinical And Occupational Settings, Frances Silva
Theses & Dissertations
Visual acuity (VA) is universally accepted as the gold standard metric for ocular vision and function. Contrast sensitivity (CS), color vision, and electrophysiological testing for clinical and occupational settings are warranted despite being deemed ancillary and minimally utilized by clinicians. These assessments provide essential information to subjectively and objectively quantify and obtain optimal functional vision. They are useful for baseline data and monitoring hereditary and progressive ocular conditions and cognitive function. The studies in this dissertation highlight the value of contrast sensitivity, color vision, and cone specific electrophysiological testing, as well as the novel metrics obtained with potential practical clinical …
Microglial Response To Glucocorticoids During Chronic Sleep Fragmentation, Christian Chelson
Microglial Response To Glucocorticoids During Chronic Sleep Fragmentation, Christian Chelson
Masters Theses & Specialist Projects
Sleep is one of the body’s greatest and most basic needs. Chronic sleep loss (<6 hours a day) is linked to many cardiovascular issues, diabetes, and inflammatory conditions and has been shown to lower life expectancy. Obstructive sleep apnea (OSA) is a complication that causes sleep fragmentation in >8% of adults from developed countries, and many with OSA may be unaware of their condition. Having long-term OSA is linked to neuroinflammation caused by activated microglia in the brain, but the mechanics of this inflammation are not well understood. It is known that glucocorticoids, steroid hormones produced and released from the adrenal glands, have a suppressive effect on microglia. The purpose of this study is to explore the role that glucocorticoids have upon microglia activation induced by chronic sleep fragmentation (SF). C57BL/6J mice were …6>
Role Of Chronic Stress-Induced Neuroinflammation In Rodent Locus Coeruleus Physiology And Anxiety-Like Behaviors, Arthur Anthony Alfonso Reyes
Role Of Chronic Stress-Induced Neuroinflammation In Rodent Locus Coeruleus Physiology And Anxiety-Like Behaviors, Arthur Anthony Alfonso Reyes
Graduate School of Biomedical Sciences Theses and Dissertations
The locus coeruleus (LC), the primary site of brain norepinephrine (NE), is a key anatomical brain region implicated in the stress response. Stress is a neuroendocrine physiologic response to a stressor that promotes organism survival through adaptive change and restoration of homeostasis. The central stress response, which drives behavioral and physiological change, is primarily mediated by activating the hypothalamic-pituitary-adrenal (HPA) axis. While advantageous in the short term, chronic stress exposure can lead to HPA axis and LC dysregulation, which are thought to contribute to the etiology of anxiety disorders. Previous studies demonstrate the effects of acute stress in increasing LC …
Social Creatures: The Impact Of Solitary Confinement On Psychophysiological Health And How Inmates Percieve Their Humanity And Social Well-Being, Julia Austin
Honors Projects
This paper will define and examine the use of solitary confinement within the United States prison system and review its mental, physical, and social impacts. As social creatures, human mental and physical well-being depends on meaningful social interactions absent in segregation units. As it currently stands, vulnerable populations, including racial minorities, LGBTQIA+ individuals, and those with developmental disabilities or psychological disorders, are at risk of irrevocable harm and abuse within these facilities from staff as well as other inmates. With a rotating 80,000 inmates held in solitary confinement every day, the current structure of the prison system deemphasizes rehabilitation and …
Eco-Interoception: What Plants, Fungi And Protista Have Taught My Body, Sara Riley Dotterer
Eco-Interoception: What Plants, Fungi And Protista Have Taught My Body, Sara Riley Dotterer
Art Theses and Dissertations
To me, ecology is the relational, full-body awareness that I am made up of and deeply connected to everything around me; and for better or worse, this is reciprocal. I form ecotones, an ecological transitional zone between two ecosystems, with the world around me. I use this ecotonal lens to blur binaries and dissolve boundaries between me and the world “outside my body.” During my Masters of Fine Arts at Southern Methodist University, I have continuously explored and represented the lives of various more-than-human species outside of my body, including plants, fungi and protista through an ecotonal lens. Although these …
The Effects Of Acute Exercise On Memory: Considerations Of The Testing Effect, Philip Christian
The Effects Of Acute Exercise On Memory: Considerations Of The Testing Effect, Philip Christian
Honors Theses
This study had three main objectives. The first objective was to determine whether or not there was evidence of a testing effect being present when a short-term memory assessment is included along with a long-term memory assessment. The second objective was to determine whether acute exercise can improve long-term memory recall over a control condition. The third objective was to determine if the potential effects of acute exercise on long-term memory are confounded by the inclusion of a short-term memory assessment. Participants were 54 undergraduate students at the University of Mississippi, with an age range of 18-22 years old. Participants …
Validating A New In Vivo Model To Study Als, Izabela J. Cimachowska
Validating A New In Vivo Model To Study Als, Izabela J. Cimachowska
Student Theses and Dissertations
Buildup of oxidative stress and mitochondrial dysfunction are well known characteristics of both sporadic and hereditary amyotrophic lateral sclerosis (ALS). While both forms of the disease seem to arise from common cellular dysfunction, the genetic disease is studied to a much greater extent. Engineering novel animal models of the sporadic form of the disease is crucial for development of druggable targets to treat ALS and understand the underlying mechanisms. Interestingly, accumulation of oxidative stress by exacerbated emission of reactive oxygen species (ROS) from presynaptic mitochondria is a hallmark of both hereditary and sporadic ALS. Previous work by our laboratory showed …
The Color Of Sound: An Insight On Chromesthesia, Lupe Rodriguez
The Color Of Sound: An Insight On Chromesthesia, Lupe Rodriguez
Honors Capstones
Many people can see with their eyes, but there are some people who can see through sound. Chromesthesia is when sound involuntarily evokes an experience of color through shapes and movement. The goal of this project is to show what this experience is like and give people an opportunity to experience it in a way themselves.
The Color of Sound Website Prototype
Plant Sentience: The Burden Of Proof, Jon Mallatt, David G. Robinson, Michael R. Blatt, Andreas Draguhn, Lincoln Taiz
Plant Sentience: The Burden Of Proof, Jon Mallatt, David G. Robinson, Michael R. Blatt, Andreas Draguhn, Lincoln Taiz
Animal Sentience
Segundo-Ortin & Calvo’s (2023) target article takes a less speculative and more evidence-based approach to plant sentience than did previous works promoting that idea. However, it retains many of the idea’s longstanding difficulties such as starting from a false dichotomy (plants must be either hardwired or sentient), not accepting the full burden of proof for an extraordinary claim, confusingly redefining accepted cognitive terms, implying cell consciousness, not adopting the most parsimonious explanations for plant behaviors, and downplaying all the counterevidence. We advise rectifying these problems before plant sentience can become a full-fledged scientific domain.
Plants Lack The Functional Neurotransmitters And Signaling Pathways Required For Sentience In Animals, David G. Robinson, Michael R. Blatt, Andreas Draguhn, Lincoln Taiz, Jon Mallatt
Plants Lack The Functional Neurotransmitters And Signaling Pathways Required For Sentience In Animals, David G. Robinson, Michael R. Blatt, Andreas Draguhn, Lincoln Taiz, Jon Mallatt
Animal Sentience
We cannot agree with Segundo-Ortin and Calvo that plants are sentient organisms. We have critically examined several aspects of their target article, and find their claims are not supported by the published evidence. We address these claims in sections on whether plants have a ‘neurobiology’ analogous to that of animal nervous systems, including neurotransmitters and synaptic receptors that respond to anesthetics; and whether plant signaling resembles neural transmission. For the latter, we especially consider the unique way plants signal their responses to wounding. Although the plant vascular system has been compared to the animal nervous system, animal blood vessels would …
The Impacts Of Immune Challenges On Fish Behavior And Physiology, Teisha King
The Impacts Of Immune Challenges On Fish Behavior And Physiology, Teisha King
LSU Doctoral Dissertations
For species living in dominance hierarchies, social rank dictates access to resources and often contributes to reproductive success. To ensure survival, individuals constantly evaluate trade- offs between crucial biological systems, like the reproductive and immune systems, depending on their social rank and physiological state. Little is known about how social species balance interactions between immune system function, fluctuations in social status and reproductive fitness, and the performance of behaviors necessary for maintaining social status when sick, particularly in fishes, the largest and most diverse group of vertebrates. My dissertation research uses a whole animal approach to examine how physiological profiles …
Enhancing The Quality Of Life For Senior Citizens: A Facilitator’S Guidebook For Mindful Music And Movement, Shannon Sexton
Enhancing The Quality Of Life For Senior Citizens: A Facilitator’S Guidebook For Mindful Music And Movement, Shannon Sexton
Mindfulness Studies Theses
Music appreciation and enjoyment enhance well-being throughout the lifespan. The challenges and constraints that people experience as they age can lead to lack of access to music, decreased physical activity, and fewer avenues for creative expression. Group music and movement interventions created for older populations offer opportunities for social connection and improved quality of life. Mindful practices add further benefit when combined with these interventions. Current available programs are scarce and most often do not encompass mixed modalities. In addition, the benefits of these programs do not show long-term sustainability. The purpose of this thesis is to explore the effects …
The Role Of Neurotrophin Signaling In Urinary Bladder Dysfunction With Cyclophosphamide-Induced Cystitis, Harrison Wood Hsiang
The Role Of Neurotrophin Signaling In Urinary Bladder Dysfunction With Cyclophosphamide-Induced Cystitis, Harrison Wood Hsiang
Graduate College Dissertations and Theses
Interstitial cystitis/bladder pain syndrome (IC/BPS) is a chronic inflammatory pelvic pain syndrome characterized by urinary frequency and urgency, bladder discomfort, decreased bladder capacity, and pelvic pain. A positive feedback loop of bladder inflammation and afferent hypersensitization is currently thought to underlie IC/BPS. Inflammation increases bladder afferent excitability, which in turn releases inflammatory neuropeptides, growth factors, cytokines, and chemokines throughout the micturition pathway, leading to altered bladder function and sensation. There currently exists no effective therapy for IC/BPS.
While its etiology remains unknown, a large body of evidence suggests a role for changes in neurotrophin signaling, particularly that of nerve growth …
Rhythmic Behaviors: Understanding Neuromodulation At The Neuromuscular Level, Kenneth Garcia
Rhythmic Behaviors: Understanding Neuromodulation At The Neuromuscular Level, Kenneth Garcia
Honors Projects
Neuromodulation allows for the flexibility of neural circuit dynamics and the outputs they produce. Studies of the stomatogastric nervous system (STNS) have expanded our knowledge on the actions of neuromodulators, small molecules that most often activate G-protein coupled receptors and reconfigure circuit activity and composition. In these systems, modulation has been found to occur at every level, from sensory-motor coupling to neuromuscular transmission (Harris-Warrick and Marder 1991). Neuromodulators have complex effects on motor output; they can alter the firing of individual neurons while also modulating muscle properties, neuromuscular transmission, and sensory neuron response to muscle activity (Fort et al. 2004). …
Effects Of Picrotoxin Application On The Cardiac Ganglion Of The American Lobster, Homarus Americanus, John T. Woolley
Effects Of Picrotoxin Application On The Cardiac Ganglion Of The American Lobster, Homarus Americanus, John T. Woolley
Honors Projects
Picrotoxin (PTX) has been employed extensively as a tool within the crustacean stomatogastric nervous system (STNS) for its efficacy in blocking K+ and Cl+ currents gated by both GABA and glutamate. Through blocking some currents in the STNS, PTX allows for examination of other components without their presence. However, effects of PTX are relatively unknown within the lobster’s cardiac ganglion (CG). As an incredibly small nervous system of only nine neurons, the lobster CG presents an excellent model system for studying neural circuits. Given that the chemical synapses in the CG are mediated by glutamate, the present study …
A Picture Worth A Thousand Words: Factors Influencing Disability Accommodations, Alicia E. Martin
A Picture Worth A Thousand Words: Factors Influencing Disability Accommodations, Alicia E. Martin
Cal Poly Humboldt theses and projects
Because not all disabilities look the same it is difficult to label a person with disabilities just by looking at them. Given that our knowledge, attitudes, and perceptions impact how we interpret our world and our willingness to act, people, including professors, may be biased toward providing accommodations for those with easily recognizable disabilities and biased against those with non-recognizable disabilities, and this may impact the disabled person’s ability to learn. This thesis aims to address whether professors’ disability-related attitudes, perceptions of accommodation reasonableness, and willingness to provide accommodations differ when the disability is recognizable (student is pictured in a …
Female Middle Aged Rats Showed Increased Recovery From A Focal Demyelination With Drug Combination : Changes In Dcx And Nfkb Suggest Increased Oligodendrocytes Production, Andrew James Smith
Female Middle Aged Rats Showed Increased Recovery From A Focal Demyelination With Drug Combination : Changes In Dcx And Nfkb Suggest Increased Oligodendrocytes Production, Andrew James Smith
Browse all Theses and Dissertations
Neurodegenerative diseases such as multiple sclerosis affect millions of people around the globe, and promising treatments to counter its progress have been studied extensively. In our study, we used Dawley rats and tested them using the Montoya Staircase test to evaluate their ability to use their forelimbs. After training, surgery was performed using lysolecithin to induce focal demyelination on the rats. After the surgery a drug combination of fluoxetine, ibuprofen, and ascorbic acid was used on injured rats and they were then retested on the Montoya Staircase test. They were then sacrificed and were stained for doublecortin (DCX) and nuclear …
Periodic Paralysis : Pursuing A Protocol, Kirsten Denman
Periodic Paralysis : Pursuing A Protocol, Kirsten Denman
Browse all Theses and Dissertations
Hypokalemic Periodic Paralysis is an autosomal dominant disease of skeletal muscle in which patients experience episodes of weakness. There is currently no highly effective therapy. A mouse model has been created to study the disease to better understand the physiological changes leading to weakness and to develop novel treatments. However, the work done with the mouse model has used ever-changing protocols and the data produced have been insufficient to answer key questions and bring treatments closer to clinical trials. I evaluated factors of temperature, insulin, potassium concentrations, and length of protocol or exercise, to develop a protocol that reproducibly triggers …
Prefrontal Coding Of Naturalistic Working Memory: Mechanisms During Normal Maintenance And Modelled Disease, Megan P. Roussy
Prefrontal Coding Of Naturalistic Working Memory: Mechanisms During Normal Maintenance And Modelled Disease, Megan P. Roussy
Electronic Thesis and Dissertation Repository
Neural activity in the primate lateral prefrontal cortex (LPFC) has been causally linked to working memory (WM) — the brief maintenance and mental manipulation of information. Primates use WM to perform tasks in complex contexts; however, neural mechanisms of WM and the pathophysiology related to WM deficits have traditionally been studied using simple tasks that deviate from naturalistic conditions. This raises the question, how is WM processed in naturalistic conditions? To explore this, I trained two macaque monkeys on a spatial WM task set in a naturalistic virtual environment. During the task, a target was presented in 1 of 9 …
Cortisol Receptor Sensitivity As A Risk Factor For Depression, Michela Michielli
Cortisol Receptor Sensitivity As A Risk Factor For Depression, Michela Michielli
Honors Theses
In 2020, the World Health Organization reported over 264 million people across the world were suffering from depression. Studies have demonstrated that one source of depression is a hormonal imbalance involved in the stress response. Cortisol is a stress hormone regulated by the Hypothalamic-Anterior-Pituitary (HPA) Axis. Its effects on the stress response and other metabolic activities in the body are exerted through the glucocorticoid and mineralocorticoid receptors (GR and MR respectively).
Our research has examined mutations known as single-nucleotide-polymorphisms (SNPs) relating to cortisol-receptor sensitivity and the behavior of cortisol in the body to investigate the link between cortisol activity and …