The Brain's Large-Scale Electrophysiological Signals : Fundamental Attributes And Neurosurgical Applications,
2020
University at Albany, State University of New York
The Brain's Large-Scale Electrophysiological Signals : Fundamental Attributes And Neurosurgical Applications, Mohammad Amin N/A Nourmohammadi
Legacy Theses & Dissertations (2009 - 2024)
Brain’s electrophysiological signals are most certainly the ultimate source for studying the sophisticated neural network inside our cranium. The unparalleled complexity of these biosignalsis the quintessential manifestation of their underlying complicated neurophysiological processes. Studying brain signals on the cellular level provides valuable information regarding the brain’s electrophysiology on the small-scale. However, it is the remarkable network in the large-scale that gives rise to the brain’s extraordinary attributes and exceptional capabilities—perception, cognition, computation, and consciousness are all the emergent byproducts of the dynamic neuronal interactions on the network level. In this sense, the large-scale electrophysiological signals, recorded from the surface of …
The Dysregulation Of Circadian Rhythms And Its Relation To Hippocampal Neurodegenerative Disease,
2020
University at Albany, State University of New York
The Dysregulation Of Circadian Rhythms And Its Relation To Hippocampal Neurodegenerative Disease, John Patrick Mccauley
Legacy Theses & Dissertations (2009 - 2024)
Circadian rhythms modulate body temperature, sleep-wake cycles and cognitive functions like learning and memory. Interestingly, patients suffering from neurodegenerative disease like Alzheimer’s disease and brain insults like traumatic brain injury experience dysregulated circadian rhythms and learning and memory deficiencies as a symptom. The core molecular machinery that establishes these rhythms relies on the activation of positive and negative transcriptional-translational feedback loops within the hypothalamic suprachiasmatic nucleus (SCN). Subordinate circadian oscillators distributed throughout the peripheral and central nervous system follow the rhythmic activity of the SCN. One of these, the hippocampus, is mostly involved in regulating memory formation and recall. Experimental …
Statistical Methods To Unravel Cortical Mechanism Of Perception And Response To Auditory Stimuli,
2020
University at Albany, State University of New York
Statistical Methods To Unravel Cortical Mechanism Of Perception And Response To Auditory Stimuli, Ladan Moheimanian
Legacy Theses & Dissertations (2009 - 2024)
Behavioral responses to auditory stimuli have a critical role in our daily activities. The perception of these stimuli and the generation of appropriate behavioral responses requires the interaction of thousands of neurons in the auditory-motor pathways in the brain. Despite their importance, still many neuroscientific questions about these interactions are remained to be answered. This may result from the limitations of brain recordings as well as statistical methods to analyze brain recordings. In this dissertation, I investigated underlying mechanisms that govern these neural interactions in the auditory-motor pathways using novel statistical techniques applied to the brain recordings from the surface …
Role Of Smad4 Dependent Signaling In Controlling The Functioning And Connectivity Of Basal Vomeronasal Sensory Neurons,
2020
University at Albany, State University of New York
Role Of Smad4 Dependent Signaling In Controlling The Functioning And Connectivity Of Basal Vomeronasal Sensory Neurons, Ankana S. Naik
Legacy Theses & Dissertations (2009 - 2024)
ABSTRACT
Assessing A Two-Hit Model Of Schizophrenia: Prenatal Choline Deficiency And Induced Hypofunction Of Nmda Receptors In Male And Female Long Evans Rats,
2020
Colby College
Assessing A Two-Hit Model Of Schizophrenia: Prenatal Choline Deficiency And Induced Hypofunction Of Nmda Receptors In Male And Female Long Evans Rats, Samuel Gray, Samuel W. Gray
Honors Theses
Choline is an essential dietary nutrient essential to the development and function of the central nervous system. Prenatal choline deficiency alters hippocampal development as well as acetylcholine metabolism, leading to cognitive impairments and attentional and sensory processing deficits into adulthood. MK-801 is an NMDA receptor antagonist frequently used in rodent models of neuropsychiatric conditions, particularly schizophrenia. Acutely and sub- chronically, it causes hyperlocomotion and social withdrawal. One primary goal of the present study were to investigate prenatal choline deficiency induces a biological vulnerability to the motor deficits, anhedonia, and social impairment precipitated by low-dose sub-chronic MK-801 administration in adulthood. Another …
Executive Function Deficit As A Precursor To Memory Impairments In Hapoe4 Transgenic Rats,
2020
Colby College
Executive Function Deficit As A Precursor To Memory Impairments In Hapoe4 Transgenic Rats, Kaitlin Mcmanus
Honors Theses
The hApoE4 allele is one of the strongest genetic risk factors for Alzheimer’s disease (AD). It underlies amyloid-bdeposits and neurofibrillary tangles, the two hallmarks associated with AD pathology, and is subsequently associated with AD symptomology. Despite its importance, no rat animal studies to date use hApoE4 knock-ins. In addition to this deficit in the field of AD literature, the vast majority of AD studies focus on memory, even though executive function deficits may precede memory impairments in AD, and may be a predictor of AD development. Thus, the present study addressed these gaps in AD research by investigating the behavioral …
Young African American Men's Conception Of Fatherhood Among Survivors Of Childhood Abuse,
2020
Walden University
Young African American Men's Conception Of Fatherhood Among Survivors Of Childhood Abuse, Ohan Patricia Carter
Walden Dissertations and Doctoral Studies
Male survivors of abuse who become fathers themselves face challenges different from female survivors, such as conceptualizing their roles as providers and heads of households after the traumatic and often belittling experiences of abuse. However, very few researchers have studied the connection between child abuse and fatherhood, and none specific to young African American fathers. An interpretative phenomenological approach enabled exploration of how African American fathers who were abused as children, conceptualized and perceived their own experiences with fatherhood. The theoretical framework for this study was identity theory, which indicates that how people conceptualize a social role influences their actions …
Young African American Men's Conception Of Fatherhood Among Survivors Of Childhood Abuse,
2020
Walden University
Young African American Men's Conception Of Fatherhood Among Survivors Of Childhood Abuse, Ohan Patricia Carter
Walden Dissertations and Doctoral Studies
Male survivors of abuse who become fathers themselves face challenges different from female survivors, such as conceptualizing their roles as providers and heads of households after the traumatic and often belittling experiences of abuse. However, very few researchers have studied the connection between child abuse and fatherhood, and none specific to young African American fathers. An interpretative phenomenological approach enabled exploration of how African American fathers who were abused as children, conceptualized and perceived their own experiences with fatherhood. The theoretical framework for this study was identity theory, which indicates that how people conceptualize a social role influences their actions …
Moderators Of Depression And Self-Management In Type 2 Diabetes Patients,
2020
Walden University
Moderators Of Depression And Self-Management In Type 2 Diabetes Patients, Cynthia Elaine Fraser
Walden Dissertations and Doctoral Studies
Although Type 2 diabetes can be reversed or controlled, many individuals choose not to adhere to treatment regimens, nor do they engage in self-management practices. The purpose of this cross-sectional study was to explore self-management among individuals with Type 2 diabetes, examining whether some psychosocial variables have a moderating effect on self-management. The psychosocial variables explored in this research were perception of body image, fear of hypoglycemia, level of family support, and depression. The biopsychosocial model was the theoretical framework. Using the Body Appreciation Scale, Diabetes Self-Management Questionnaire, The Family Relationship Scale, Hypoglycemic Fear Survey (HFS-II), and the Beck Depression …
Cell-Type Specific Extracellular Matrix Signaling In The Opioid-Addicted Synapse,
2020
Medical University of South Carolina
Cell-Type Specific Extracellular Matrix Signaling In The Opioid-Addicted Synapse, Vivian C. Chioma
MUSC Theses and Dissertations
To date, heroin abuse is a leading cause of drug overdose-related deaths in the United States, highlighting a need for further research elucidating effects of maladaptive neuroadaptations following prolonged heroin use. Activation of the tetrapartite synapse in nucleus accumbens core (NAcore), which comprises of pre- and post-synapse, astrocytic processes, and surrounding extracellular matrix (ECM), has been linked to increased relapse vulnerability. Specifically, degradation of ECM by activated matrix metalloproteinases (MMPs) is involved in extracellular synaptic remodeling both constitutively and transiently in extinguished and drug seeking conditions, respectively. Although increases in MMP-2,9 fluorescence can be localized to soma and dendritic processes …
Effects Of The Abused Inhalant Toluene On Mpfc-Dependent Cognitive Behaviors And Associated Neural Activity,
2020
Medical University of South Carolina
Effects Of The Abused Inhalant Toluene On Mpfc-Dependent Cognitive Behaviors And Associated Neural Activity, Kevin Michael Braunscheidel
MUSC Theses and Dissertations
Volatile organic solvents like toluene induce euphoria and intoxication when inhaled at high concentrations. Inhalant misuse is linked to behavioral, cognitive, and anatomical deficits in humans leading to a reduced productivity and quality of life. Yet, preclinical studies on the effect of inhalants on executive control in animal models are limited. We address this gap in knowledge using rodent models in two ways: first, by examining the long-lasting effects of repeated toluene inhalation during adolescence on several measures of executive function in adulthood and second, by studying the effects of acute toluene inhalation on risk/reward decision making and related neurocircuitry. …
Polygenic Risk Score Analysis Revealed Shared Genetic Background In Attention Deficit Hyperactivity Disorder And Narcolepsy,
2020
Nagoya University
Polygenic Risk Score Analysis Revealed Shared Genetic Background In Attention Deficit Hyperactivity Disorder And Narcolepsy, Nagahide Takahashi, Tomoko Nishimura, Taeko Harada, Akemi Okumura, Damee Choi, Toshiki Iwabuchi, Hitoshi Kuwabara, Shu Takagi, Yoko Nomura, Jeffrey H. Newcorn, Nori Takei, Kenji J. Tsuchiya
Publications and Research
Attention deficit hyperactive disorder (ADHD) is a highly heritable neurodevelopmental disorder, and excessive daytime sleepiness is frequently observed in ADHD patients. Excessive daytime sleepiness is also a core symptom of narcolepsy and essential hypersomnia (EHS), which are also heritable conditions. Psychostimulants are effective for the symptomatic control of ADHD (primary recommended intervention) and the two sleep disorders (frequent off-label use). However, the common biological mechanism for these disorders has not been well understood. Using a previously collected genome-wide association study of narcolepsy and EHS, we calculated polygenic risk scores (PRS) for each individual. We investigated a possible genetic association between …
Biomechanics And Neural Control Of Movement: Cmi's Effects On Downstream Motor Processing And Gait In Forwards And Backwards Walking,
2020
Claremont Colleges
Biomechanics And Neural Control Of Movement: Cmi's Effects On Downstream Motor Processing And Gait In Forwards And Backwards Walking, Christopher Choi
CMC Senior Theses
Analyzing the effects of cognitive motor interferences (CMI) on walking is usually done in patients with neurological comorbidity or during forward walking (FW). However, there are few studies that examine gait differences between FW and backward walking (BW) under the presence of CMI when speed is kept constant on a treadmill. In this study we examined how CMI would disrupt sensory feedback and affect the descending motor pathway. We hypothesized that subjects that walked backwards and were given a cognitive task would show the greatest differences in gait due to a lack of visual input and the presence of CMI. …
How Does Eye Movement Desensitization And Reprocessing (Emdr) Work? An Examination Of The Potential Mechanisms Of Action,
2020
Pepperdine University
How Does Eye Movement Desensitization And Reprocessing (Emdr) Work? An Examination Of The Potential Mechanisms Of Action, Sara Forster
Theses and Dissertations
A mounting body of evidence suggests that Eye Movement Desensitization and Reprocessing therapy (EMDR) is successful in reducing the impact of posttraumatic symptoms. Although the exact mechanisms of action remain unknown, theories from the psychological to the neuroscientific continue to emerge, expand, and evolve. This study will examine four of the most prominent theories to date and weigh the evidence for and against each one. It will also review, compare, and contrast the theories, evaluate the research supporting each one, and propose the most likely explanation for EMDR's success given the state of the research. Neurobiological mechanisms and correlates as …
Covid-19, Evolution, Brains And Psychology,
2020
Open University, UK
Covid-19, Evolution, Brains And Psychology, Frederick Toates
Animal Sentience
Attention needs to be directed to the processes that control behavior in humans and the adaptive problems that they solved in our early evolutionary environment. The evolutionary mismatch between the current environment and the human brain can yield important insights into the problems that beset us in the context of environmental degradation and nonhuman animal welfare.
Affective Sentience And Moral Protection,
2020
Boston University
Affective Sentience And Moral Protection, Russell Powell, Irina Mikhalevich
Animal Sentience
We have structured our response according to five questions arising from the commentaries: (i) What is sentience? (ii) Is sentience a necessary or sufficient condition for moral standing? (iii) What methods should guide comparative cognitive research in general, and specifically in studying invertebrates? (iv) How should we balance scientific uncertainty and moral risk? (v) What practical strategies can help reduce biases and morally dismissive attitudes toward invertebrates?
Insect Sentience And The Rise Of A New Inclusive Ethics,
2020
University of Florence
Insect Sentience And The Rise Of A New Inclusive Ethics, David Baracchi, Luigi Baciadonna
Animal Sentience
Welfare protections for vertebrates are grounded in the belief that vertebrates are sentient and capable of feeling whereas invertebrates are not. We agree with Mikhalevich & Powell that the exclusion of small-brained invertebrates from bioethics is not warranted by the current state of the scientific evidence. The choice to promote protection for certain invertebrates should be based on the Animal Sentience Precautionary Principle (ASPP). This principle should not prevent us from conducting experimental research with non-human animals to advance knowledge. However, we believe that it is important to outline practical guidelines to manage the wellbeing of invertebrates, while accumulating further …
Serotonin 5-Ht2a And 5-Ht2c Receptors Regulate Rat Maternal Behavior Through Distinct Behavioral And Neural Mechanisms,
2020
Southwest University, Chongqing, China
Serotonin 5-Ht2a And 5-Ht2c Receptors Regulate Rat Maternal Behavior Through Distinct Behavioral And Neural Mechanisms, Jun Gao, Lina Nie, Yu Li, Ming Li
Department of Psychology: Faculty Publications
Serotonin 5-HT2A and 5-HT2C receptors play important yet distinctive roles in the regulation of rat maternal behavior. The present study investigated their neural substrates and explored the possible behavioral mechanisms (i.e., behavioral organization or maternal motivation). Sprague-Dawley postpartum females were microinjected with either a selective 5-HT2A agonist (TCB-2, 0.4 or 4.0 μg/side) or a 5-HT2C agonist (MK212, 2.5 or 5.0 μg/side) into the medial prefrontal cortex (mPFC) or ventral tegmental area (VTA). Ten and 60 min later, their maternal activities were observed in the home cage; and their motivational responses towards pups were examined in a …
Tissue-Specific Regulation Of Pnmt By Intron Retention During Neural Development,
2020
University of Central Florida
Tissue-Specific Regulation Of Pnmt By Intron Retention During Neural Development, Meeti Mehta
Digital Repository: Showcase of Undergraduate Research Excellence
No abstract provided.
A Kinesin Adapter Directly Mediates Dendritic Mrna Localization During Neural Development In Mice,
2020
CUNY Hunter College
A Kinesin Adapter Directly Mediates Dendritic Mrna Localization During Neural Development In Mice, Hao Wu, Jing Zhou, Tianhui Zhu, Ivan Cohen, Jason Dictenberg
Publications and Research
Motor protein-based active transport is essential for mRNA localization and local translation in animal cells, yet how mRNA granules interact with motor proteins remains poorly understood. Using an unbiased yeast two–hybrid screen for interactions between murine RNA-binding proteins (RBPs) and motor proteins, here we identified protein interaction with APP tail-1 (PAT1) as a potential direct adapter between zipcode-binding protein 1 (ZBP1, a β-actin RBP) and the kinesin-I motor complex. The amino acid sequence of mouse PAT1 is similar to that of the kinesin light chain (KLC), and we found that PAT1 binds to KLC directly. Studying PAT1 in mouse …
