Communication Sciences and Disorders Commons^™

Objective Differences Between Premium And Mid-Level Digital Hearing Aids, Chelsea C. Barry

Dissertations, 2014-2019

This ongoing study compared premium and mid-level hearing aids from major manufacturers on noise reduction and general electroacoustic characteristics. The findings of this study will contribute to the scarce independent literature evaluating currently available hearing aid technology. Measuring the overall gain reduction in response to a steady state noise can objectively test noise reduction. However, such a method does not specifically test a hearing aid’s ability to reduce speech in specific narrow frequency bands. Hanline & Rout (2008) developed a set of stimuli to evaluate multichannel noise reduction algorithms more precisely. We used these stimuli to test noise reduction abilities …

Melodic Contour Identification And Speech Recognition By School-Aged Children, Michael P. Morikawa

Dissertations, 2014-2019

Using the Sung Speech Corpus (SSC), which encompasses a single database that contains musical pitch, timbre variations and speech information in identification tasks, the current study aimed to explore the development of normal-hearing children’s ability to use the pitch and timbre cues. Thirteen normal hearing children were recruited for the study ages ranging from 7 to 16 years old. Participants were separated into two separate groups: Younger (7-9) and Older (10-16). Musical Experience was taken into account as well. The Angel Sound ™ program was utilized for testing which was adopted from previous studies, most recently Crew, Galvin, and Fu …

Variations In Breastfeeding Practices In The Nicu: A Mixed Methods Investigation, Elizabeth Emaleo Nottingham

Dissertations, 2014-2019

Abstract

Human milk is crucial for the healthy development of infants, particularly preterm infants. Practice patterns and resource allocations to support and promote optimal breastfeeding in this population of infants varies by facility. The purpose of this mixed methods study was to explore differences in practice patterns, describe nurses’ knowledge and perceptions about breastfeeding in the NICU, and identify factors contributing to the differences between hospitals.

Researchers used a sequential explanatory design to gather both quantitative and qualitative data. In the first quantitative phase, a Web-based questionnaire was developed and deployed via Qualtrics to all hospitals with a Neonatal-Perinatal Fellowship …

Envelope-Following Responses And The Effects Of Cochlear Delay, Nicole Jones

Dissertations, 2014-2019

There is great interest in developing clinical applications for phase-locked auditory potentials that are elicited by human speech. A common analysis of vowel-elicited responses is to analyze the envelope-following response (EFR) amplitude at the fundamental frequency (F0) of the eliciting vowel. For this study, we systematically examined the effect of modeled vowel formants on EFR amplitude. EFRs were elicited using a fundamental frequency of 103 Hz, representative of a male speaker’s fundamental frequency. Stimuli consisted of two simultaneously presented sinusoidally amplitude-modulated tones with the same F0. One carrier frequency was fixed at 353 Hz, representing a first formant frequency; the …

The Build-Up Of Auditory Stream Segregation In Adult Cochlear Implant Users: Effect Of Differences In Frequency And Amplitude-Modulation Rate, Alexandria Matz

Dissertations, 2014-2019

This project will use an objective approach to evaluate the effect of inter-subsequence frequency difference and amplitude-modulation rate on build-up stream segregation in CI users. Six post-lingually deafened CI users, between 18 and 75 years old, have been studied and compared to four normal-hearing listeners, between 18 and 75 years old. Repeated pairs of A and B noise bursts were adopted from a previous work (Nie et al., 2014) with modifications and additional conditions, where A and B bursts are narrow-band noise carrying sinusoidal amplitude modulation (AM). The A and B bursts in a stimulus sequence differed either in the …

Effect Of Biofeedback And Exercise Type On Neural Swallowing Control, Rachel J. Rinehart

Senior Honors Projects, 2010-2019

The clinical efficacy of swallowing exercises is well established in swallowing literature, and biofeedback has been shown to augment cortical hemodynamic response (HDR) during normal swallowing. This study compared HDR during swallowing exercises with and without biofeedback to HDR during normal swallows with and without biofeedback. Healthy adult participants (n=6, mean age=50.83 male=2) were recruited and trained on the following conditions: normal swallowing, swallowing exercise in which a specific physiological target was given (skilled), and swallowing exercises in which no specific physiological target had to be achieved (non-skilled). Biofeedback consisted of submental surface electromyography (sEMG) signals displayed visually. HDR were …

Effects Of Age, Timbre, Pitch Contour, And Background Noise On Melodic Contour Identification And Sentence Recognition By Children, Lindsey M. Seyfried, Sarah A. Troy

Senior Honors Projects, 2010-2019

The researchers collaborated together with the help of Dr. Yingjiu Nie in the Lab of Auditory Perception in Children and Adults on the four research studies completed there. Through these projects, they were involved in all areas of the research process. While they cannot claim the research project as their own, by assisting the graduate students and Dr. Nie, they exposed themselves to how research is conducted in this field and gained valuable knowledge in the process. To conclude the project, they each wrote individual personals reflection to summarize and review the experience.

Interdisciplinary Skill Development During Summer Autism Clinic, Rachel F. Kagle

Senior Honors Projects, 2010-2019

The present paper focuses on the interdisciplinary skill development of speech-language pathology graduate student clinicians and occupational therapy graduate student clinicians in the treatment of children with Autism Spectrum Disorder. This paper explains the significance of these disciplines in the treatment of Autism before giving the results of the study. For the present study, data was collected at James Madison University’s Summer Autism Camp over a four-week period. There were ten speech-language pathology (SLP) clinicians that received the survey and eleven children with Autism that were enrolled in the program. It was hypothesized that the SLP clinicians would display skill …

Maladaptive Behavior And Communication Disorders Following Tbi: Survivor, Caregiver And Speech-Language Pathologists' Perspectives, Marena S. Jones

Senior Honors Projects, 2010-2019

Following traumatic brain injury (TBI), individuals often face neurobehavioral challenges (e.g., aggression) that hinder treatment. Research on the relationship between communication disorders and maladaptive behaviors is limited. Participants from a convenience sample of two survivors of TBI, a caregiver, and a speech-language pathologist were interviewed about their experiences and perspectives. The interviews reflected focused questions that were congruent across participants. Interviews were recorded, transcribed, and coded. Each coder coded the transcriptions individually, they were then compared using consensus coding for reliability, and finally analyzed for emergent themes. The two most referenced themes were “Communication challenges” and “Changes through rehab”. “Communication …

Mother’S Perceptions Of Their Personal Impact On Infant Language Development, Miranda Steinbeck

Senior Honors Projects, 2010-2019

During the early months of a child’s language development, their ability to perceive and process language is very fluid and the language input they receive can have a large impact on their language later in life. From the beginning, children need to be able to differentiate the sounds of speech from the rest of the sounds that occur in their environment (Golinkoff, Can, Soderstrom, Hirsh-Pasek, 2015). In other words, children are exposed to the different sounds in their environment and they begin to pick up on the speech sounds, such as conversation-like interactions, with their parents (Golinkoff et al., 2015). …

The Relationship Between Fundamental Frequency Variation And Articulation In Healthy Speech Production, Casey Behre

Senior Honors Projects, 2010-2019

Fundamental Frequency (F0) and articulation are two factors of speech production that impact speech perception, and yet the potential interactions of these two factors are not well understood. Their relationship has potential theoretical as well as clinical implications. This Honors Project aims to better understand this relationship by examining changes in fundamental frequency (F0) and the acoustic vowel space as an index of articulatory behaviors with a within-speaker approach. Specifically, F0 variations were examined in relation to the acoustic vowel space for 10 male native speakers of American English. Two sets of acoustic measures were made to evaluate F0 and …

The Effects Of Age On The Perception Of Frequency In Noise, Mary E. Scherer

Dissertations, 2014-2019

Difficulty understanding speech in the presence of background noise is one of the most common complaints of older adults, both with and without hearing loss. One possible contributing factor is an age-related decline in neural synchrony (e.g., phase locking). Tones-in-noise were used in an attempt to disrupt rate-place coding of frequency and to encourage participants to use phase-locked, temporal representations of frequency during a behavioral frequency discrimination task. Fourteen adults participated in the study (five younger, aged 21-29; four middle aged, 41-50; and five older, aged 61-80). Participants had clinically normal hearing sensitivity (≤ 25 dB HL at octave frequencies …

Effect Of Age On Abrs In Mice With Epha4 Mutations, Melissa M. Teller

Dissertations, 2014-2019

It is known that EphA4 can influence the establishment of tonotopic pathways in the auditory system. This can be measured by an increase in thresholds on the auditory brainstem response test (ABR) in mice. It is also known that the aging population in humans tends to have poorer thresholds in the high frequency sounds as they age, termed presbycusis or age-related hearing loss. The C57BL/6J background strain of mice that is known to experience a presbycusis-like process, although it is not specified when this process begins and how it progresses through their life span. The goal of this study was …

The Neural Representation Of Frequency In Quiet And Noise Across The Adult Life Span, Alexandra Bove

Dissertations, 2014-2019

The purpose of the present study was to examine why older adults have trouble with speech-in-noise understanding. Difficulty with speech-in-noise comprehension has been associated with age-related degradation in frequency processing. Our study sought to investigate this relationship by examining the neural representation of frequency in quiet and in noise across the adult-life span. In order to do this, one behavioral correlate of frequency processing, frequency difference limens (FDLs), and one electrophysiological correlate, the frequency following response (FFR), was utilized. In the present study, we specifically focus on the electrophysiological measures of frequency processing across the adult life span. It was …

The Effect Of Workplace Noise Exposure On Reaction Time, Hollis T. Leidy

Dissertations, 2014-2019

This study examined the effect of listening fatigue on the reaction time of normal hearing listeners, who work in noisy places, at different signal to noise ratios (quiet, +5 and +10 dB). Reaction time was measured using a single task paradigm on twelve male listeners (ages 23-58 years) before and after an eight hour shift at a noisy power plant. The participants in the study also completed a subjective rating questionnaire at two intervals, before and after the fatigue-inducing condition. Results of the study indicated that the reaction time was significantly longer for the most difficult listening condition, indicating the …

Efficacy Of Digital Otoscopy In Telemedicine, Alexandra B. Short

Dissertations, 2014-2019

With an average of 1 audiologist to every 20,000 people in developed countries and as many as 6.25 million people in developing countries, the need for audiology services in rural or underserved populations is evident (Swanepoel, et al., 2010). Telemedicine offers an affordable solution. Previous studies assessed digital otoscopy images for postsurgical follow-up (Kokesh, et al., 2008) as well as remote video otoscopy by telehealth technicians (Biagio, et al., 2013). These studies used traditional laptop based video otoscopes. The purpose of the present study was to determine whether more portable and less expensive systems, such as the CellScope and OTO …

Development And Deployment Of A Small Stereo-Hearing Testing System: Two Manuscripts, Sofia A. Ganev

Dissertations, 2014-2019

MANUSCRIPT #1 TITLE

Development of a Deployable Stereo-Hearing System

ABSTRACT

Objective: To investigate the effectiveness and efficiency of a portable stereo-hearing testing system with the intent of deployment for data collection in future studies. We quantify sound localization accuracy and speech-in-noise thresholds comparing unilateral (such as single-sided deafness) and bilateral subjects. We desired to design a small, inexpensive system that would show a large effect size between binaural and monaural subjects in a variety of stereo hearing tasks.

Methods: Subjects were tested on localization accuracy and speech understanding in noise using a laboratory-made stereo-hearing testing device. For the …

The Effect Of Chronic Obstructive Pulmonary Disease On Swallowing, Jessica R. Torres

Senior Honors Projects, 2010-2019

This work is composed of a literature review, research review, and self-reflective essay. The anatomy and physiology of normal swallowing and respiration are reviewed. Additionally, the effect of chronic obstructive pulmonary disease (COPD) on these processes is discussed. The research goal was to determine how lung volume changes adapt the physiology of swallowing in individuals with COPD. The research project was designed and conducted by Teresa Drulia, M.S., CCC-SLP. COPD participants (n=9, mean age=72, 6 male) were compared to older healthy individuals (n=10, mean age= 59, 3 male). Participants completed swallows of 20cc of water at four lung volume conditions: …

The Effects Of Lung Volume On Swallowing In Chronic Obstructive Pulmonary Disease, Teresa C. Drulia

Dissertations, 2014-2019

Chronic Obstructive Pulmonary Disease (COPD), a respiratory disease that leads to reduced airflow, may result in difficulty swallowing with disease progression. The coordination between the respiratory and swallowing systems decouple and they may experience increased risk of aspiration. This study aimed to determine the effects of lung volume on swallowing in individuals with COPD compared with older healthy. Specifically, the study examined if altering lung volume at the time of the swallow changed swallowing timing, specifically pharyngeal swallow duration, and impacted the respiratory-swallow pattern in individuals with COPD. Measurement of estimated lung volume (ELV), pharyngeal swallow duration, and respiratory-swallow patterning …

Type And Location Of Speech Disruptions In Adolescents With And Without Specific Language Impairment, Katherine E. Davies

Senior Honors Projects, 2010-2019

This research project analyzed the types and locations of speech disruptions in adolescents with and without Specific Language Impairment (SLI). The narrative samples of 12 adolescents with SLI and 12 typically developing (TD) adolescents were analyzed. Using Schwalbe’s (2012) classification system, the speech disruptions in the 24 narratives were coded for the type and reason for disruption. The broad category of speech disruptions were classified under revisions, repetitions, filled pauses and orphans, and silent pauses. The reason for the disruption was coded as the part of speech of the word that was determined to have caused the disruption. Comparisons were …

Reflection: Effect Of Age On Auditory Brainstem Responses In Mice With Epha4 Mutations, Erica L. Hoogerland

Senior Honors Projects, 2010-2019

Presbycusis, or age-related hearing loss is a condition that affects approximately 40% of the population over 65 years of age (Gates & Mills, 2005). Studying the effects of EphA4 mutations (wild type, heterozygous, and homozygous) mice is fundamental in understanding the relationship between onset of age-related hearing loss, in both the mammalian population and the human population. In order to further understanding of age-related hearing loss, the researchers evaluated thirty-six mice in a preliminary study from two months to nine months of age. Following data analysis, the researchers confirmed the results by continuing a second round of testing. The hearing …

Build-Up Effect Of Auditory Stream Segregation Using Amplitude-Modulated Narrowband Noise, Harley J. Wheeler

Senior Honors Projects, 2010-2019

Recent psychoacoustic experiments (Böckmann-Barthel et al., 2014; Deike et al., 2012) have re-examined research regarding stream segregation and the build-up effect. Stream segregation is the ability to discern auditory objects within a stream of information, such as distinguishing one voice amongst background noise or an instrument within an orchestra. Initial works examining this topic proposed that auditory information is not immediately distinguished as various streams, but rather that differences accumulate over time, allowing listeners to segregate information following a period of build-up (i.e., the build-up effect); whereas more current findings indicate a build-up period is unnecessary for segregation. This experiment’s …

Release From Masking: Behavioral And Physiological Masking Level Differences, Sarah L. Hodgson

Dissertations, 2014-2019

Binaural hearing offers several advantages over monaural hearing and is believed to be one factor that is involved in the ability to understand speech in background noise. Binaural hearing involves analysis of interaural timing and intensity differences in signals arriving at the two ears which provides listeners with sound localization cues as well as signal in noise detection. When sounds arrive at each ear at slightly different times, there may be a release from the effects of background noise, allowing listeners to detect softer sounds in noise. Masking Level Differences (MLDs) have been widely used to evaluate behavioral binaural processing. …

Prepulse Inhibition Of The Acoustic Startle Reflex To Obtain A Psychometric Function In Mice, Robyn Browne

Dissertations, 2014-2019

The acoustic startle reflex (ASR) is an automated motor response to an unexpected and intense auditory stimulus (Ouagazzal, Reiss, & Romand, 2006). When an audible ‘prepulse’ stimulus is presented before the intense, startle-evoking stimulus (SES); the startle reflex response is reduced and this is known as prepulse inhibition (PPI). The degree of ASR inhibition serves as a measure of the behavioral salience of the prepulse (Carlson & Willott, 1996). This study aimed to obtain a psychometric function from the amount of PPI of the ASR that resulted from varying intensity levels of a prepulse stimulus (PPS).

Twelve mice were used …

Wideband Acoustic Immittance And Dpoae Changes In Older Adults, Mandy M. Williams

Dissertations, 2014-2019

This study examined the effect of middle ear aging in adults using wideband acoustic immittance (WAI) measures. WAI and traditional 226 Hz tympanometry were measured in 25 young adult ears (ages 18-25) and 26 older adult ears (ages 50-71) with normal middle ear status. While minimal differences between older and younger adults were observed with 226 Hz tympanometry, significant age effects were seen with WAI measures. The older adults demonstrated a statistically significant increase in middle ear absorbance at lower frequencies (226-1,260 Hz) and decreased absorbance at higher frequencies (4,000-5,040 Hz) compared to the younger adult group. While the effect …

The Effect Of Auditory Fatigue On Reaction Time In Normal Hearing Listeners At Different Signal To Noise Ratios, Haley Athey

Dissertations, 2014-2019

This study examined the effect of listening fatigue on the reaction time of young, normal hearing listeners at +5 and +10 dB signal to noise ratio. Reaction time was measured in a single task paradigm on twenty listeners (ages 19-30 years) before and after a fatigue-inducing listening task. The participants also completed a subjective rating questionnaire at the two intervals. Results indicated that there was no significant difference between the reaction times before and after listening fatigue. However, for a subgroup of stimuli (nonsense syllables ending with consonants) the reaction time was 52 msec longer after listening fatigue. The participants …

Effect Of Epha4 Signaling Mutations On Auditory Function, Michelle R. Gerringer

Dissertations, 2014-2019

Neural pathways underlie the ability of the auditory system to perceive sound. Organization of neural pathways into functional auditory circuitry is accomplished in part by Eph and ephrin signaling proteins. One of these signaling proteins, the EphA4 receptor tyrosine kinase protein, acts as an axon-guidance molecule to aid in target selection and to maintain tonotopicity in the auditory brainstem and midbrain. Genetic mutations of the EphA4 protein have been shown to affect structural auditory development, but there is limited research which shows the functional effects of these mutations. The goal of the present study was to determine the functional effects …

Inter-Professional Collaboration: The Impact Of Serial Versus Merged Treatment On The Behavior Of Children With Autism Spectrum Disorder, Robyn Starry

Masters Theses, 2010-2019

Interdisciplinary collaboration is an innovative, resourceful approach to healthcare intended to positively affect patient outcomes. The purpose of the present study was to determine the efficacy of the serial exposure to three treatments, Applied Behavior Analysis, Speech Language Pathology, and Occupational Therapy, in comparison with an exposure to a merge of these treatments on child outcomes. During the serial treatment phases of intervention, three licensed professionals implemented core techniques from their respective disciplines. During merged treatment phases, a graduate clinician combined and implemented techniques from all three fields: differential attention, request sequences, sensory exposure, verbal/tactile cueing for postural alignment/control and …

Variability In Clinically Measured Wideband Acoustic Immittance Over Time In Young And Old Adults, Allison G. Mcgrath

Dissertations, 2014-2019

Wideband acoustic immittance (WAI) measures of the middle ear have the potential to increase our ability to detect changes in the middle ear transfer function not seen using traditional tympanometry. In order to use this new tool diagnostically we must first understand its normal clinical variability. The present study aimed to investigate the variability that occurs when wideband acoustic immittance (WAI) is measured clinically within subjects as a function of subject age, as a function of time, and as a function of pressure. A total of thirty-six ears from eighteen subjects were studied (n=18 young adults ears, n=18 older adult …

Practices Supporting Breastfeeding In The Nicu: A National Survey, Elizabeth E. Nottingham

Showcase of Graduate Student Scholarship and Creative Activities

Babies who are born early are at risk for developing serious life-threatening conditions and developmental delays. Providing babies with breast milk, and helping them breast feed has been shown to reduce the chances of these conditions and delays. However, hospitals across the country have adopted wildly different practices when it comes to feeding these babies. By understanding the current practices in hospitals across the country, we can begin to understand how to affect change.