Mental Disorders Commons^™

Neuroanatomical And Morphometric Differences In Children Who Stutter, Mohammad A. Khan

Honors Scholar Theses

Childhood-Onset Fluency Disorder commonly known as stuttering is a neurodevelopmental speech disorder characterized by disruptions in speech fluency. While genetic and neurobiological factors are implicated, the structural brain differences underlying stuttering remain unclear. This study investigated neuroanatomical alterations in children who stutter (CWS) compared to typically fluent children (TFC), focusing on gray matter volume, cortical thickness, and surface area in speech-related regions; the Inferior Frontal Gyrus, Middle Temporal Gyrus, and Pre-motor Operculum. High-resolution MRI data from 100 children (48 CWS, 52 TFC) aged 3–12 years were analyzed using FreeSurfer. Group comparisons revealed no statistically significant differences in cortical thickness, surface …

Investigating Undergraduate Conditioned Place Preference Utilizing Virtual Alcohol Stimuli, Nikole A. Rodriguez Torres, Robert Astur, Jeffrey Divino

Honors Scholar Theses

Alcohol use remains a major concern among college students, with binge drinking linked to serious physical and mental health problems. But how much does the environment influence these addictive behaviors? The relationship between environmental cues and alcohol related behaviors is a critical area of study, particularly understanding reward and motivation mechanisms. Binge drinking, common among college students, is associated with a range of negative outcomes such as physical harm, legal issues, poorer overall health, sleep problems, depression, anxiety, and severe thoughts of suicide. In our study, college undergraduates were exposed to two VR rooms: one with alcohol-related stimuli and one …

Exercise As An Intervention For Postpartum Depression (Ppd), Kylie P. Mistretta

Honors Scholar Theses

Objective: To illustrate the applications of exercise for preventing the development of postpartum depression (PPD) and addressing associated risk factors identified in the literature. Data Sources: PubMed and EBSCO: Academic Search Premier were accessed using the search terms exercise OR physical activity OR yoga AND postpartum depression OR postnatal depression. A secondary search of PubMed was conducted using the search terms exercise AND pregnancy AND depression OR gestational diabetes OR weight gain OR sleep quality.

Study Selection: Studies selected for inclusion were peer-reviewed, published after January 2012, written in English, and relevant to the PPD risk factors examined. Only clinical …

Regaining Effort-Based Food Motivation: The Drug Methylphenidate Reverses The Depressive Effects Of Tetrabenazine In Female Rats, Deanna Pietrorazio

Honors Scholar Theses

Tetrabenazine (TBZ), a vesicular monoamine transporter type 2 (VMAT-2) inhibitor, depletes dopamine and induces motivational deficits and other depressive symptoms in humans. Methylphenidate (MPH) is a dopamine transport blocker that is used to enhance motivational function. Previous studies have shown that in male rats, TBZ induces a shift in effort-related choice such that a low-effort bias is induced. In male rats this occurs at a dose range of 0.75-1.0 mg/kg TBZ, and this effect is reversible with co-administration of MPH. Recent studies have shown that females need a higher dose of TBZ (2.0 mg/kg) to show the low-effort bias. The …

Assessing The Effect Of Chronic Dopamine Receptor 2 Blockade As A Potential Model Of Secondary Negative Symptoms In Rats Using The Fr5/Chow Feeding Choice Task, Cyrene Nicholas

Honors Scholar Theses

Haloperidol, a dopamine (DA) D2 receptor antagonist, is an antipsychotic drug which is commonly used to treat schizophrenia and other psychiatric disorders. These disorders are often characterized by elevated striatal dopamine, which is speculated to have a role in producing positive symptoms such as hallucinations, delusions, and paranoia, as well as symptoms related to motivational salience and reward prediction. Individuals with schizophrenia also exhibit negative symptoms, such as amotivation, anergia, fatigue, and apathy among others. While some negative symptoms of schizophrenia are inherent to the pathophysiology, other negative symptoms are hypothesized to be partially induced by chronic exposure to antipsychotic …

Promoting Resilience In Self-Management (Prism): Adverse Childhood Experiences And Impacts On Emotion Regulation, Kasey Ann Macedo

Honors Scholar Theses

PRISM (Promoting Resilience in Self-Management) is a mindfulness-based intervention that aims to strengthen emotion regulation skills among individuals by employing cognitive behavioral therapy components. The purpose of the current study is to identify the relationship between adverse childhood experiences (ACEs) and depression, as well as to examine the changes in emotion regulation strategies of participants by comparing pre and post test data. The participants were voluntarily recruited from the Cornerstone Foundation, a homeless shelter, food pantry, and community center in Vernon, CT. The 13 participants completed PRISM through four weeks of two-hour workshop sessions in a small-group format. Results indicate …

Effort-Related Decision Making In Comt Variant Mice: Pharmacological Studies And Genetic Susceptibility To Motivational Dysfunction, Suzanne Cayer

Honors Scholar Theses

Effort-related decision making tasks in animals can model motivational symptoms in humans, which are a set of symptoms spanning a multitude of neuropsychiatric disorders, such as major depressive disorder and the negative symptoms of schizophrenia. The present studies aimed to evaluate the effort-related effects of the Val158Met polymorphism of human catechol-methyltransferase (COMT), by testing mice carrying either the human COMT Val (n=8) or Met allele (n=8) with Wild-Type control mice (n=15) by using concurrent FR2 and FR4/pellet choice tasks in a touchscreen operant conditioning apparatus. The Val158Met polymorphism has been repeatedly associated with neuropsychiatric disorders, and the Val allele has …

Relationship Between Sensory Sensitivities And Cognitive And Adaptive Abilities In Children With Autism Spectrum Disorders, Laura Pendergast

Honors Scholar Theses

Sensory sensitivities are widely reported among individuals with ASD. These sensory sensitivities can be classified as over-responsivity, under-responsivity, or seeking of sensory stimulation. Following recent changes in the diagnostic criteria, sensory sensitivities are considered a key feature of the behavioral phenotype of ASDs. Despite their significance, sensory sensitivities have been largely underestimated. Therefore, more research in this area may reveal important information about the influence of sensitivities on functioning, as well as the underlying causes of the symptoms. This study investigated a possible relationship between sensory sensitivities and cognitive and adaptive abilities in children with ASD. The sample included 29 …

Anxiety Symptoms In Individuals With High Functioning Autism, Jane C. Kelleher

Honors Scholar Theses

Research indicates a complicated relationship between anxiety disorders and autism spectrum disorders (ASDs). The current study examined the relationship between anxiety symptoms and ASD in 30 Optimal Outcome (OO) individuals, 33 High Functioning Autism (HFA) individuals, and 34 Typically Developing (TD) individuals. The groups were compared on the K-SADS measure of anxiety symptoms. The HFA group presented greater anxiety than both the OO and TD groups, and the OO and TD groups only differed on one anxiety symptom. Across all three groups, there was a significant association between greater anxiety symptoms and a higher level of social and communicative impairment. …

Diagnosing The Prodromal State Of Alzheimer's Disease, Jennifer Bartkowiak

Honors Scholar Theses

Mild Cognitive Impairment- Amnestic Subtype (MCIa) is a putative prodromal stage of Alzheimer’s Disease (AD) characterized by focal deficits in episodic verbal memory. Less is known about relative deficits in visuospatial learning, although there is ample evidence indicating involvement of the hippocampus in visuospatial learning, as well as hippocampal degeneration in early AD. The aim of this study was to better characterize the components of working memory dysfunction in people with MCIa to increase the ability to reliably diagnose this disease. Fifty-six elderly adults diagnosed with MCIa and 94 healthy elderly completed a hidden maze learning task. Results indicated similar …