Communication Sciences and Disorders Commons^™

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 …

The Effects Of Sensorineural Hearing Impairment On Asynchronous Glimpsing Of Speech, Erol J. Ozmeral, Emily Buss, Joseph W. Hall Iii

Communication Sciences and Disorders Faculty Publications

In a previous study with normal-hearing listeners, we evaluated consonant identification masked by two or more spectrally contiguous bands of noise, with asynchronous square-wave modulation applied to neighboring bands. Speech recognition thresholds were 5.1–8.5 dB better when neighboring bands were presented to different ears (dichotic) than when all bands were presented to one ear (monaural), depending on the spectral width of the frequency bands. This dichotic advantage was interpreted as reflecting masking release from peripheral spread of masking from neighboring frequency bands. The present study evaluated this effect in listeners with sensorineural hearing loss, a population more susceptible to spread …

Perceptions Fathers Have On Time Spent With Preschool Children And Its Impact On Language Outcome Measures, Megan E. Porter

Rehabilitation, Human Resources and Communication Disorders Undergraduate Honors Theses

Research has shown there are differences between mother and father language usage with their children. There is no information on language use of fathers who spend a high quality amount of time with their children. This study attempted to identify language characteristics of fathers who report high participation in household and childcare activities.

Outcomes In Language And Social Skills As Seen In Children With Autism And Developmental Disabilities Participating In Equine Assisted Activities, Megan Koenigseder

Rehabilitation, Human Resources and Communication Disorders Undergraduate Honors Theses

Individuals with developmental disabilities commonly present characteristics that include deficits in social and communicative abilities. A number of intervention strategies have been implemented, but none have proven to be most effective. A somewhat novel approach known as equine assisted activities and therapies (EAAT) involves the utilization of horses during intervention and has shown to be effective in areas concerning quality of life, social functioning, self-regulation, adaptive behaviors, motor control, and motivation.

The purpose of the current study is to examine the effects of EAA on social skills and expressive language in 2-4 children diagnosed with developmental disability. Participants engaged in …

Differences Between Two Head Start Locations Using The Developmental Indicators For The Assessment Of Learning (Dial) As A Measure Of Language And Concepts, Hailey Guthrie

Rehabilitation, Human Resources and Communication Disorders Undergraduate Honors Theses

The study was conducted on a sample of 43 students between two Head Start locations, A and B. Sociodemographic information was obtained via questionnaires completed by parents at locations A and B. The Developmental Indicators for the Assessment of Learning, Fourth Edition (DIAL-4) was the screener used to assess each child’s performance with regards to language, concept, and motoric development. There was no significant difference between locations A and B for concept and language sub-test standard scores. DIAL motor sub-test scores for locations A and B were statistically significant. This study found that the DIAL is a reliable way to …

Velar–Vowel Coarticulation In A Virtual Target Model Of Stop Production, Stefan A. Frisch, Sylvie M. Wodzinski

Communication Sciences and Disorders Faculty Publications

Velar–vowel coarticulation in English, resulting in so-called velar fronting in front vowel contexts, was studied using ultrasound imaging of the tongue during /k/ onsets of monosyllabic words with no coda or a labial coda. Ten native English speakers were recorded and analyzed. A variety of coarticulation patterns that often appear to contain small differences in typical closure location for similar vowels was found. An account of the coarticulation pattern is provided using a virtual target model of stop consonant production where there are two /k/ allophones in English, one for front vowels and one for non-front vowels. Small differences in …

The Effects Of Acoustic Bandwidth On Simulated Bimodal Benefit In Children And Adults With Normal Hearing, Sterling W. Sheffield, Michelle Simha, Kelly N. Jahn, René H. Gifford

Communication Sciences and Disorders Faculty Publications

Objectives—The primary purpose of this study was to examine the effect of acoustic bandwidth on bimodal benefit for speech recognition in normal-hearing children with a cochlear implant (CI) simulation in one ear and low-pass filtered stimuli in the contralateral ear. The effect of acoustic bandwidth on bimodal benefit in children was compared to the pattern of adults with normal hearing. Our hypothesis was that children would require a wider acoustic bandwidth than adults to 1) derive bimodal benefit, and 2) obtain asymptotic bimodal benefit.

Design—Nineteen children (6–12 years) and ten adults with normal hearing participated in the study. Speech recognition …

A Case Study Of Cochlear Implants And Complications, Carly E. Amurao

Senior Honors Projects

A cochlear implant is an electronic medical device that replaces the function of the damaged inner ear, allowing the individual access to sound. In recent years, there has been tremendous progress in developing technology in the area of cochlear implants to aid those with severe/profound hearing loss. Specifically, there has been a movement towards bilateral implantation. Each cochlear implant candidate has a unique hearing loss, and must reach required bench marks in order to be considered a viable candidate for a cochlear implant. This process includes: meeting the required level of hearing loss, a required trial with hearing aids that …

Early Hearing Loss And Language Outcomes: A Review And Case Study, Sarah Reid

Honors Scholar Theses

Early hearing loss is a widespread medical and developmental concern that affects over 1 in 500 infants (Mehl, 1998). Hearing impairments in children have been linked to a variety of adverse developmental outcomes, including poor speech and language ability and difficulties with cognition and social-emotional adjustment. Early intervention has been demonstrated to be one of the most important factors in influencing outcomes for children born with congenital hearing loss (Vohr et al., 2008). This review and case study aims to outline the connection between early hearing loss, intervention, and speech/language abilities by exploring the case of a 13-month-old infant with …

Parent Beliefs About Technology: A Comparison Of Homeschool And Formal Education Families, Eli L. Skelton

Rehabilitation, Human Resources and Communication Disorders Undergraduate Honors Theses

The purpose of this study was to gain information about how technology is used by parents to assist school learning as well as their opinions and beliefs about the role of technology in the learning process. Specifically, using homeschool and educational networks as well as social media for distribution of a digital questionnaire, this study sought to gauge parents’ experience with, as well as responses to, attitudes, and values towards the use of technology in homeschool and classroom education. Sixty-five parents of children who are studying at the elementary grade levels participated in this study. Twenty of these were parents …

Effects Of Talker Variability On Spectral Contrast Effects., Asim Mohiuddin

College of Arts & Sciences Senior Theses

Spectral contrast effects are context-dependent effects that influence the way we perceive certain sounds. Evidence of these effects can be seen in experiments where a precursor sound (e.g. a sentence) is followed by a target vowel sound (like /ɪ/ as in "bit" or /ɛ/ as in "bet"). If the precursor's frequency was emphasized in areas more consistent with the frequency of /ɛ/, listeners tend to perceive the target sound to be the opposite i.e. /ɪ/. A recent study shows using sentence precursors from 200 different talkers diminishes these effects questioning previous claims that talker variability has no influence on spectral …

Talking About Aphasia: The Two Voices Of Insight, Elizabeth O'Brien

College Honors Program

This thesis aims to understand the lived experience of communication disorders (CDs), including the challenges, stigmas, and misconceptions related to CDs. It draws upon in-depth interviews with speech-language pathologists (SLPs), participant observations of people with aphasia, and observations of aphasia forum websites. During the data collection process, people talked about the stigmas and hardships of CDs and the subjective experience of having trouble communicating with others. This thesis will use their words and ideas to highlight the important aspects of coping with and treating CDs. It discusses how people with aphasia think about space, their body, and time, and considers …

Toddlers And Technology: An Examination Of How The Digital Surround May Be Related To Prototypic Vocabulary Development And Social Interactions During Play, Hannah Biarnesen Hutcheson

Graduate Theses and Dissertations

This study sought to examine how the digital technology that surrounds young children may be related to prototypic vocabulary development and Social interactions during play. Twenty-six families in the Northwest Arkansas region with children between 15-36 months of age participated in the study. Thirteen children attended a campus preschool, six children attended a grant-funded local preschool, and seven children, all from the Northwest Arkansas area, were part of an earlier home-based study. The materials for the study included a developmental-technology use questionnaire and the MacArthur-Bates Communicative Development Inventories. Archival videotaped play sessions with the seven home-based children utilized a “Little …

Spatial Irregularities Of Compound Action Potential Origination In Individual Cochleae, Kaitlyn M. Kennedy

Graduate Theses/Dissertations

The present study aims to evaluate the origin of compound action potential (CAP) responses in the guinea pig ear using the following method. Pipettes were sealed into the cochlear apex of 26 guinea pigs to inject ototoxic pharmaceuticals that inhibit nerve responses without affecting cochlear function. The rate of the injection was adjusted once each minute to account for variations in the diameter of the cochlea and to maintain a steady flow of pharmaceuticals. CAP measurements collected at around 90-second intervals using tone burst stimuli during the injections allowed evaluation of the neural responses over time. Responses to higher stimulation …