Medicine and Health Sciences Commons^™

Stereo Hearing With Unilateral Bone Conduction Amplification, Megan Crouse

Dissertations, 2020-current

Abstract

Conductive hearing loss results when the neural integrity of the auditory system is healthy, but sound is prevented from reaching the cochlea in its entirety. Unilateral Congenital Aural Atresia (UCAA) is a birth defect in which there is no external ear canal, resulting in the reduction of sound able to reach the middle ear. Two primary options for correcting this conductive hearing loss are canalplasty or a bone anchored hearing device (BAHD). We want to compare the benefit level from these options, specifically in two conditions: sound localization and the ability to detect speech from one ear while there …

Objective Detection Of Vestibular Evoked Myogenic Potentials, Daniel J. Romero

Dissertations, 2020-current

Cervical and ocular vestibular evoked myogenic potentials (cVEMPs and oVEMPs, respectfully) are considered objective tests of vestibular function measured using surface electromyography (EMG). In addition, VEMPs are visually detected by an examiner, often requiring a high level of stimulation to the ear to easily visualize a waveform plotted across time. However, a high level of stimulation, like those used during routine VEMP testing, is problematic since it has been shown to be unsafe in children when compared to adults. Visual interpretation can also vary between examiners in cases of reduced vestibular function or when the level of required muscle contraction …

Influence Of Musicianship, Socioeconomic Status, And Working Memory On Children’S Speech Recognition In Noise, Victoria H. Whitney

Dissertations, 2020-current

Superior speech recognition in the presence of background noise has been repeatedly observed among musicians. For children whose auditory skills are immature or delayed, improved speech-in-noise understanding via musical training could have significant clinical implications. The present study considered the impact socioeconomic status (SES) and working memory have on musicians’ greater skill during such tasks in order to better understand the mediating factors of the proposed musician advantage, as well as provide additional evidence of its existence. Participants were recruited by the Laboratory for Auditory Perception in Children and Adults at James Madison University. Ultimately, twenty-five normal-hearing children between the …

Effect Of A Small Change In Auricle Projection On Sound Localization, Elizabeth N. Surface

Dissertations, 2020-current

Pinnae assist in sound localization, and changes in auricle shape, position, or projection can theoretically alter the perceived position of a sound. The minimal displacement required to affect perceived sound location is undefined. This study quantified the error in horizontal sound localization when auricle projection is slightly decreased. The study was conducted at two sites by different experimenters, using different (though similar) systems, over a year apart. There were 21 normal-hearing participants: 11 at the University of Virginia (UVA) and 10 at James Madison University (JMU). Both UVA and JMU protocols involved a normal listening condition and a second condition …

Language Sampling With Older School-Aged Children: Examination Of Analyses And Sampling Contexts, Michelle Lenhart

Dissertations, 2020-current

Purpose: Conversation, narrative, and expository language sampling contexts are recommended for school-aged children (Pezold et al., 2020), and multiple ways to analyze these samples have been promoted in the clinical literature. This dissertation addressed two gaps in the literature related to analyses and sampling contexts. The purpose of study one was to examine differences in two commonly-used language sample analysis methods, Sampling Utterances Grammatical Analysis Revised (SUGAR) and Systematic Analysis of Language Transcripts (SALT). The purpose of study two was to examine the presence of age-related changes in conversation, narrative, and expository contexts for older school-aged children.

Method: Conversational, narrative, …

How College Men Describe Their Understanding Of Sexual Assault, Sarah Anolik

Dissertations, 2020-current

Despite the proliferation of many vital bystander intervention programs across the country, approximately one in four college women will experience sexual violence. Though it was once believed that a small minority of men were responsible for the vast majority of sexual violence, an estimated 12%-25% of college men report having used sexual violence as an undergraduate student. Research across disciplines suggests several factors associated with the perpetration of sexual violence. While numerous studies have explored these constructs quantitatively on and off college campuses, there have been far fewer qualitative studies that provide insight into how men who have perpetrated violence …

Dual Task Study Of Cognitive And Postural Interference: Development Of A Methodology For Use In Vestibular Disorders, Valerie Beacham

Dissertations, 2020-current

For patients with vestibular impairments, postural stability alone can be demanding but is more taxing when an individual’s attention is focused on both maintaining balance and a secondary/cognitive task simultaneously. Thus, dual task paradigms where balance must be maintained while performing postural and cognitive tasks concurrently provides an assessment on one’s attentional resources available for balance. Previous studies show varying levels of dual task effects in patients with vestibular loss with little consistency between studies regarding choice of balance and cognitive tasks. The purpose of this study was to assess the feasibility of a dual task paradigm using portable instrumentation …

Assessing Word Recognition Through Head Turn Preference In Infants With Chronic Otitis Media, Allison E. Schmidt

Dissertations, 2020-current

Previous studies across a variety of different languages have shown that eleven-month-olds tested via the head-turn preference paradigm show a preference for familiar words over unfamiliar words, as demonstrated by longer look times. This study examined the effect of chronic otitis media on the preference for familiar over unfamiliar words. Nine eleven-month-old children (mean age 342 days, SD = 9.61) with chronic ear infections, defined as three or more diagnoses before the test date, were tested using wordlists adapted from a study performed by Vihman et al. (2004). Children with a history of chronic otitis media did not show a …

The Influence Of Side-Lying Position On Oropharyngeal Swallow Function In At-Risk Infants: An Exploratory Study, Julian White

Dissertations, 2020-current

Speech-Language Pathologists (SLP) are the primary healthcare providers responsible for the evaluation and treatment of infant feeding and swallowing disorders. At-risk infants, such as those born prematurely or with certain medical conditions, are more prone to swallowing impairments (i.e., dysphagia). Dysphagia in at-risk infants can have severe consequences such as chronic respiratory symptoms, pneumonia, progressive lung disease, undernutrition, and death. Therefore, it is important to have methods of examining an infant’s swallow functioning that are both safe and accurate. A leading method of evaluating infant swallowing is the Modified Barium Swallow Study (MBS). The works contained within this dissertation document …