Medicine and Health Sciences Commons^™

A Preliminary Study Of The Articulatory And Acoustic Features Of Forward And Backward Tone Placement In Singing, Krista Wyllys

Masters Theses

A variety of terms exist for describing tone quality in singing, and voice scientists, voice therapists, teachers of singing, and students of singing use different terms to describe the same sound. One aspect of tone quality is tone placement. Teachers of singing often rely on imagery and imitation to elicit correct tone placement from students of singing. More concrete data about what produces forward and backward tone placement could supplement singing teachers’ current practice of using imagery and imitation to elicit a desirable tone quality. This study examined forward and backward tone placement to determine the articulatory gestures and acoustic …

Relations Between Oral Pharyngeal Size And Kinematic Measures Of Tongue Related Swallowing Movements, Danielle Monast

Honors Theses

Background: Though the tongue plays a critical role during the oral phase of swallowing, studies have found that the size and shape of tongue movements during swallowing can vary greatly among individuals. One factor that may contribute to this movement variability is oral-pharyngeal cavity geometry. A cavity with a different size and shape may require different movements for efficient swallowing. While there are a number of studies that have attempted to relate the oral-pharyngeal anatomy with features of orofacial movement, these studies focused on speech movements and no studies have directly evaluated the relation between swallowing related tongue movements and …

The Effects Of Intervention Involving A Robot On Compliance Of Four Children With Autism To Requests Produced By Their Mothers, Holly Jeanne Nelson

Theses and Dissertations

The current study presents the use of a humanoid robot to facilitate compliant behaviors to two types of directives in four children with autism. The children participated in a three-month intervention program that incorporated core components of the SCERTS model in order to facilitate social communication (Prizant, Wetherby, Rubin, & Laurent, 2003). Treatment sessions were comprised of 40 minutes of traditional treatment and 10 minutes of interaction with a humanoid robot. Pre- and post-intervention assessment were conducted, each involving a 5 minute interaction with the child's mother, in which they were presented with directives in the form of physical manipulation …

The Effects Of Musical Training On Perception And Neural Representation Of Temporal Fine Structure, Verleyne Andrews-Rodgers

Dissertations, 2014-2019

One of the most common complaints of persons with sensorineural hearing loss is difficulty hearing in background noise. Temporal fine structure (TFS) is one of the factors that contributes to understanding speech in the presence of background noise. TFS refers to the periodic information in speech which helps us to identify which speech sound we are listening to. TFS is also negatively affected by hearing loss, as well as age. In a quest to discover how TFS processing and thus speech-in-noise understanding can be improved, this study examined the effects of musical training on behavioral and physiological measures of temporal …

The Effects Of Auditory And Visual Distracters On The Toleration Of Background Noise In Normal Hearing Listeners, Lauren Shastany

Dissertations, 2014-2019

The primary objective of this study was to evaluate the effect of auditory and visual cognitive loads on the preferred background noise levels in normal-hearing listeners. This study investigated the preferable background noise levels (primary task) when normal hearing listeners were presented with auditory and/or visual cognitive distractions (secondary task). It was hypothesized that normal hearing listeners’ preferable background noise level would decrease in the presence of either distracter and that the synergistic effect of the two distracters would result in even lower preferable background noise level. Preferable background noise levels were measured on 24 normal-hearing listeners under four conditions. …

Ultrasonic Vocalizations In Eph/Ephrin Mutant Mice, Bryna Rickenbach-Cline

Dissertations, 2014-2019

Purpose: Murine mammals, more commonly known as mice, emit ultrasonic vocalizations or “yelps” to communicate. It has been found that adult mice use these vocalizations to communicate with each other, and infant mice utilize ultrasonic vocalizations to communicate with their mother. It is known that a relationship exists between hearing ability and vocalization (Bass-Ringdahl, 2010). This study aims to record yelps/ vocalizations of four strains of mouse pups to determine how the development of hearing relates to the vocalizations that are emitted. It is thought that mice with compromised genes that encode for signaling proteins that are essential to the …

The Acute Effects Of Gentamycin Ototoxicity On Bobwhite Quail Basilar Papilla And Auditory Brainstem Responses, Kristie Wilson

Dissertations, 2014-2019

The present study aimed to investigate the effectiveness of a single dose of gentamycin in elevating Auditory Brainstem Response (ABR) thresholds and causing inner ear hair cell loss or damage. A total of twenty-two Bobwhite quail were used (n=7 control, n=15 experimental); experimental group quail were injected with a 200 mg/kg dose of gentamycin within 24 hours of hatch (P0). Three to four days post-hatch or injection the quail underwent ABR testing. Thresholds were measured using a 1,000 Hz, 2,000 Hz, and 4,000 Hz tone pip and a click beginning at 90 dB nominalSPL. Resulting waveforms were analyzed using MATLAB …

Quantifying Head Acceleration During Vestibular Rehabilitation, Anne Hogan

Dissertations, 2014-2019

Dizziness can often be a serious and confounding condition that ranges in severity from annoying to debilitating and affects many people. The most common and effective treatment for persistent dizziness is vestibular rehabilitation therapy, which falls into three categories: adaptation, sensory substitution, and habituation. While more is known about adaptation and sensory substitution, questions remain regarding the exact mechanisms of recovery for habituation. Precisely, the optimal stimulation to the vestibular system, as measured in intensity of head accelerations, is unknown for habituation treatment. In this dissertation are drafts of two manuscripts. The first explores the average intensity of linear and …

The Effects Of Various Modes Of Feedback On Preferred Ipod Listening Levels, Justine A. Mcdermott

Dissertations, 2014-2019

The current study was conducted in an effort to promote safe listening habits of personal media player device users. Devices such as the iPod are known to have high output capacities well within the range of potentially hazardous sound levels, thus there is a concern that personal listening may pose a risk to hearing. Intuitive and real-time feedback representing the risk of hearing damage based on selected Preferred Listening Levels (PLLs) was provided to subjects they listened to an iPod. Objective: To provide listeners with tools to judge ‘what is too loud’ (and potentially damaging to hearing) so that they …

The Effect Of Early Hearing Loss On Bobwhites’ Responses To Pure Tones: A Possible Animal Model Of Prelingual Deafness, Bethany Leanne Magee

Dissertations, 2014-2019

This study aimed to look at the behavioral responses of Bobwhite quail to pure tone stimuli by measuring peep suppression. We also considered if a duration of early hearing loss would affect Bobwhite’s responsiveness to the tones. Bobwhites were tested individually at all different ages post hatch day. The pure tones were presented at several different intensity levels and peep suppression was calculated as a measure of responsiveness to the stimuli. Mock trials were conducted as a measure of control to determine the birds’ typical peep rate. Some of the Bobwhite quail were injected with gentamicin 0-1 post-hatch day in …

Evaluation Of Motor Speech And Intervention Planning For Children With Autism, Marcil J. Boucher

Open Access Dissertations

Autism affects 1 in 88 children (Center for Disease Control, 2009), approximately 50% of whom will not develop speech (Seal & Bonvillian, 1997). Some researchers hypothesize that these difficulties in developing oral speech reflect underlying motor speech deficits (Prizant, 1996; Seal & Bonvillian, 1997; Szypulski, 2003; Andrianopoulos, Boucher, Velleman & colleagues 2007-2010). This investigation sought to identify the presence or absence of specific motor speech markers in ASD through an innovative best-practice protocol for assessing the speech, prosody, and voice quality of individuals with ASD.

The study focused on apraxic-like motor planning/programming features and dysarthric-like motor execution features in imitated, …

Effects Of A Classroom-Based Pre-Literacy Intervention For Preschoolers With Communication Disorders, Alyssa Rose Currier

Open Access Dissertations

Children with communication disorders are often at risk of literacy difficulties, especially students that present with autism and/or speech sound disorders. This quasi-experimental study was designed to examine the effects of a 10-week "hybrid" intervention for preschool students with and without communication disorders in an integrated classroom. The classroom intervention targets both vocabulary and phonological awareness, two critical components of literacy that are strongly correlated with one another. The objectives of this study were (1) to provide empirical evidence that classroom-based pre-literacy intervention can be effective for students with communication disabilities, allowing for more time with their peers in a …

An Investigation Of The Efficacy Of Direct And Indirect Aac Service Provision Via Telepractice, Nerissa Hall

Open Access Dissertations

There is a growing population of individuals using Augmentative and Alternative Communication (AAC) in need of evidence-based intervention from highly qualified personnel. However, not all speech pathology programs offer AAC coursework and/or practicum opportunities, and practicing speech-language pathologists (SLPs) report low levels of confidence and expertise in working with individuals using AAC. Therefore, there is a need to develop more innovative pre-professional training programs to better equip the next generation of SLPs with the knowledge and skills necessary to provide high-quality, evidence-based AAC interventions. Telepractice is emerging as an inventive way to provide both direct and indirect intervention services, and …

Effects Of Noise On Cognitive Function During Dual Tasks Across Normally Aging Adults, Jennine Harvey

Theses and Dissertations (ETD)

This study expands upon methods used to investigate cognition and speech perception which have been limited by lack of (a) pre-screening of cognitive function in participants, (b) reporting visual or auditory accuracy and reaction time measures across experimental conditions that examine reaction times, and (c) comprehensive test battery that includes performance across multiple levels of dual task paradigms (DTPs). This study aims to examine group performance on dual tasks (DT) increasing in cognitive (task difficulty) and perceptual load (noise) with age. Participants were divided into two groups based upon age. Group 1 consisted of 14 listeners (Female=11) who were 40-59 …

Aerodynamic And Acoustic Features Of Vocal Effort, Allison Rosenthal

Speech-Language Pathology - Theses

Many voice disorders are associated with an effortful voice; however, there have been very few studies that have examined the physiological changes that contribute to this sense of effort. Determining the factors that contribute to change in vocal effort may help clinicians to effectively target these variables when working with people with voice disorders so that voice improvement is accompanied by decreased vocal effort after treatment. Prior research has shown that alterations in aerodynamic and acoustic variables are often associated with voice disorders involving increased muscular effort, and change in these variables is correlated with abnormal voice qualities. The current …

Effects Of Phonotactic And Orthotactic Probabilities On Word Recognition For Children Who Do And Do Not Use Aac, Rachel C. Shelton

Chancellor’s Honors Program Projects

No abstract provided.

Self-Reported Symptoms Of Central Auditory Processing Dysfunction Following Mild Traumatic Brain Injury, Devon Beebe

Honors Capstone Projects - All

Mild traumatic brain injury (mTBI), also known as concussion, has emerged as a major public health concern in the United States and worldwide. Of the estimated 1.7 million head injuries that occur nationally each year, about 75% are mTBI. Despite the “mild” label, a significant percentage of these individuals continue to experience a wide array of life-altering physical, emotional, and cognitive post-concussion symptoms for months and years following injury. The central auditory nervous system is vulnerable to several injury mechanisms in TBI and, as a result, auditory problems can be among these long term problems.

Although evidence of auditory processing …

A Comparison Of Caregiver And Speech-Language Pathologist's Ratings Of Speech Outcome In Oral Cleft Clinic, Emily Swain

Honors Theses

Background: Cleft lip and/or palate is one of the most common congenital anomalies. The goal of treatment of cleft palate is normal speech, but a proportion of children with clefts exhibit speech disorders. Various outcome measures are used, but relatively few have focused on self-assessment or caregiver perception of outcome. The studies that have been done focus on comparing parents' and speech-language pathologists' ratings of speech outcome. These studies can be used to determine the degree to which caregivers are satisfied with speech outcome over time.

Purpose: The purpose of this study was to describe the relationship between speech ratings …

The Measurement Of Auditory Interhemispheric Transfer Time (Ihtt) In Children With Normal Auditory Processing Abilities, Brittany Suzanne Keahey

Doctoral Dissertations

Interhemispheric transfer time (IHTT) is the time it takes for information to be transmitted from one hemisphere to the other. The goal of this study was to determine if differences existed in the IHTT of children 6 to 9 years of age with normal auditory processing abilities by the use of an objective measure (auditory late evoked potentials [ALEPs]), specifically waves P1, N1 and P2. It was hypothesized that there would be no difference in IHTT between the groups due to the age range of participants being tested. The 16 participants were divided into two groups based on age and …

Asymmetrical Speech In Noise Assessment For Children With (Central) Auditory Processing Disorders, Jessica Vaughn

Doctoral Dissertations

The primary purpose of this investigation was to determine if children with (Central) Auditory Processing Disorder have better word recognition abilities for monosyllabic words under monaural speech-in-noise conditions than binaural speech-in-noise conditions. Fifteen participants, five females and ten males, ages 8-10 years, were included in this study. There were 7 children placed in the experimental group with a diagnosis of (C) APD identified from the Louisiana Tech University Speech and Hearing Center. There were 8 typically developing children placed in the control group. Each participant had pure-tone thresholds of 0-20 dB HL for 250-8000 Hz bilaterally. The SCAN-3 for children, …

Effects Of Untrained Earmold Impression Taking On Custom Hearing Protector Device Performance, Kelly R. Pack

Doctoral Dissertations

Today's consumer is increasingly turning to the internet for both healthcare information as well as the purchase of custom hearing protection devices (HPDs). These HPDs are often cast from do-it-yourself home ear impression kits that include a syringe and silicone earmold impression material to be injected into the ear canal. Although not required by law, earmold impressions have typically been taken by medical professionals and other individuals formally trained in the procedures and safety measures of effective earmold impression taking. The main purpose of this study was to determine if do-it-yourself earmold impressions produce HPD's with lower attenuation levels than …

Effects Of Aging And Spectral Shaping On The Sub-Cortical (Brainstem) Differentiation Of Contrastive Stop Consonants, Dania A. Rishiq

Theses and Dissertations (ETD)

Purpose: The objectives of this dissertation are to: (1) evaluate the influence of aging on the sub-cortical (brainstem) differentiation of voiced stop consonants (i.e. /b-d-g/); (2) determine whether potential aging deficits at the brainstem level influence behavioral identification of the /b-d-g/ stimuli, (3) investigate whether spectral shaping diminishes any aging impairments at the brainstem level; and (4) if so, whether minimizing these deficits improves the behavioral identification of the speech stimuli.

Subjects: Behavioral and electrophysiological responses were collected from 11 older adults (> 50 years old) with near-normal to normal hearing and were compared to those of 16 normal-hearing younger …

Preschoolers With Speech And Language Impairment: Case Studies From A Teacher-Delivered Phonological Awareness Program, Katherine J. Wickham

Masters Theses

Past and present research demonstrates early reading success related to phonological awareness (PA) instruction conducted individually or in small groups outside of the preschool classroom. This study investigated the effects of an explicit, intensive and teacher-delivered PA instruction for children with speech sound disorder and language impairment as part of the preschool curriculum. The investigator examined the performance of individual cases in both groups, those who received instruction and the control. Two participants in each of the experimental (E1 and E2) and control (C1 and C2) groups had standardized scores indicating deficits in speech and/or language. These children who received …

Speech-Language Pathoogists' Practices & Perspectives Pertaining To Animal-Assisted Therapy, Jessica S. Popp

Theses & Honors Papers

Purpose: The precise beneficial role of animals to serve as facilitators or incentives for human communication has received limited attention to date in the field of communication sciences and disorders (CSD). This study addresses the need within the field of communication sciences and disorders for qualitative research that focuses on the use of animal-assisted therapy (AAT) by speech-language pathologists . The researcher aimed to answer the following research question: What are speech-language pathologists' practices and perspectives pertaining to animal-assisted therapy? The researcher hypothesizes that the data from this survey research study will indicate patterns worth further analysis through single subject …

Test-Retest Reliability In Word Recognition Testing In Subjects With Varying Levels Of Hearing Loss, Meghan Elizabeth Grange

Theses and Dissertations

The purpose of this study was to determine the test-retest reliability of digitally recorded word recognition materials. Word recognition testing is included in a complete audiological evaluation to measure an individual's ability to discriminate what they hear. A phonetically balanced list of 50 monosyllabic words was presented to each participant at four different sensation levels (SL) using the American Speech Language Hearing Association recommended protocol for word recognition score testing. Each participant took a 10 minute break before the test was readministered. Participants included 40 subjects with varying levels of hearing loss, from normal hearing to severe hearing loss. The …

Effects Of Syntactic Complexity On Speech Motor Performance, Kelsey Lewis Boyce

Theses and Dissertations

This study evaluated the possible influence of linguistic demands on speech motor control by measuring articulatory movement stability during conditions of increasing grammatical complexity. There were 60 participants in three age groups: 20-30 years, 40-50 years, and 60-70 years, with equal numbers of men and women in each group. These speakers produced 10 repetitions of five different sentence or phrase conditions. These five conditions included two baseline measurements and three sentences of varying complexity. Each complexity condition had an MLU count of 23, word length of 17, syllable length of 25, and contained the phrase open boxes of pompoms. …

Test-Retest Reliability Of Speech Recognition Threshold Material In Individuals With A Wide Range Of Hearing Abilities, Karin Leola Caswell

Theses and Dissertations

The purpose of this study was to evaluate an updated list of digitally recorded Speech Recognition Threshold (SRT) materials for test-retest reliability. Chipman (2003) identified 33 psychometrically equated spondaic words that are frequently occurring in English today. These digitally recorded words were used to determine the SRT of 40 participants using the American Speech-Language Hearing Association guidelines. The participants were between the ages of 19 and 83 years and presented with hearing impairment ranging from normal to severe. The individual's pure-tone averages classified 16 participants with normal hearing to slight loss, 12 participants with mild loss, and 12 participants with …

Intervention With Children With Autism: The Effect Of Using A Robot On Participation In Reciprocal Play, Shereen Ririe

Theses and Dissertations

The current study was part of a larger work investigating the effects of intervention incorporating a robot on the social engagement behaviors of children with autism. The larger study implemented a single-subject, multiple-baseline research design in which four children with autism participated in baseline sessions, traditional intervention, intervention including a robot, and follow-up sessions. The current study focused on the participant's responses to directives from the clinician and the parent during collaborative activities that included the robot. Children's responses were analyzed to determine if they responded to directives without assistance, responded with hand-over-hand assistance, or did not comply. Sessions were …

The Effect Of A Robot On Children With Severe Autism During A Song Activity, Michelle Nelson

Theses and Dissertations

This study is a small portion of a larger work examining the effects of low dosage robot use in interactive and social engagement therapy for children with autism. The purpose of this study was to investigate the participation of the subjects during song activities. Four children were used as participants, each receiving a total of 20 play-based treatment sessions targeting engagement and social interaction. The clinician incorporated the robot into these treatment sessions for 10 minute long segments within a 50 minute session. The current study analyzed these 10 minute segments with the robot, coding turn-taking behaviors. Results indicated that, …

Automated Identification Of Adverbial Clauses In Child Language Samples, Brittany Cheree Brown

Theses and Dissertations

Adverbial clauses are grammatical constructions that are of relevance in both typical language development and impaired language development. In recent years, computer software has been used to assist in the automated analysis of clinical language samples. This software has attempted to accurately identify adverbial clauses with limited success. The present study investigated the accuracy of software for the automated identification of adverbial clauses. Two separate collections of language samples were used. One collection included 10 children with language impairment, with ages ranging from 7;6 to 11;1 (years;months), 10 age-matched peers,and 10 language-matched peers. A second collection contained 30 children ranging …