Communication Sciences and Disorders Commons^™

The Relationship Between The Vestibular Ocular Reflex And Perception In Young Healthy Adults, Susanne Nelson

Dissertations, 2020-current

Vestibular impairments are often identified through measures of vestibular reflexes such as the vestibulo-ocular reflex (VOR). However, in clinical practice measures of the VOR do not always correlate with the patient’s reported symptoms. In contrast to physiologic measures like the VOR, psychophysical methods can be used to assess a person’s perception of movement. Previous psychophysics research shows that perceptual thresholds of angular motion do not correlate with VOR measures, but this has not been assessed at suprathreshold levels. The purpose of this study was to assess whether vestibular reflexive responses (i.e., VOR) were correlated to the patient’s perception of movement …

Temporal Modulation Transfer Functions Of Amplitude-Modulated Cervical Vestibular Evoked Myogenic Potentials In Young Adults, Kerri Lawlor

Dissertations, 2020-current

Cervical vestibular evoked myogenic potentials (cVEMPs) are widely used to evaluate saccular function in clinical and research applications. Typically, transient tonebursts are used to elicit cVEMPs. In this study, we used bone-conducted amplitude-modulated (AM) tones to elicit AMcVEMPs. This new approach allows the examination of phase-locked vestibular responses across a range of modulation frequencies. Currently, cVEMP temporal modulation transfer functions (TMTFs) are not well defined. The purposes of the present study were 1) to characterize the AMcVEMP TMTF in young, healthy individuals, 2) to compare AMcVEMP TMTFs across different analysis approaches, and 3) to determine the upper frequency limit of …

A Survey Of Cochlear Implant Clinical Protocols In India, Ariana Morris

Dissertations, 2020-current

The most recent data published in December 2019 records that approximately 736,900 registered cochlear implantation devices have been received since their approval in the 1980s. While 183,100 of these devices belong to U.S. Citizens, the large majority of cochlear implant recipients live in other countries (U.S. Department of Health and Human Services, 2016). While a lack of standardized practices exists in relation to audiologic care and management of cochlear implant devices and patients, Browning et al. (2020) attempts to assess and analyze common practices amongst audiologists practicing within the United States of America. This survey uses a modified questionnaire based …

Quasi-Experimental Design And Outcomes Of A Graduate Clinician And Caregiver-Infant Coaching Intervention In A University Speech-Language Pathology Program, Shiree C. Harbick

Dissertations, 2020-current

Infants are born ready to learn language as one of their most critical developmental tasks, yet infants subject to environmental risk factors related to poverty and low maternal education have been shown to lag behind their peers in language development as early as 8 months of age. Research also indicates the quality of an infant’s language environment can significantly diminish the effects of these risk factors. This quasi-experimental clinical research study explored the effects of a preventive caregiver-infant coaching intervention delivered by graduate student clinicians in a university speech-language pathology program.

Developed based on a systematic review of preventive programs …

The Relationship Between Quality Of Life Outcomes And Social Hearing For Cochlear Implant Recipients Using The Nciq And Pipsl, Bonnie A. Purtill

Dissertations, 2020-current

Unmanaged hearing loss can have profound cognitive, social, and emotional impacts on a person’s life. Cochlear implants improve functional skills such as auditory detection and speech discrimination, and have also been shown to improve quality of life. Health related quality of life (HRQoL) measures are a great tool to assess mental, physical, and social changes after cochlear implantation. While previous research has established improvement in HRQoL after cochlear implantation, there remains a lack of research evaluating long-term effects of cochlear implants for post-lingually and bilaterally deafened adults. Using a disease specific HRQoL questionnaire—Nijmegen Cochlear Implant Questionnaire (NCIQ) and a social …

Amplitude-Modulated Cvemp (Amcvemps) Versus Transient Cvemp Response Properties: Possible Implications, Andrew Thorne

Dissertations, 2020-current

Cervical vestibular evoked myogenic potentials (cVEMPs) elicited by steady-state amplitude-modulated (AM) tones yield different information than conventional cVEMPs elicited by transient tonebursts, such as signal-to-noise ratio (SNR) and phase coherence (PC). This study systematically examined the effects of tonic EMG activation on AMcVEMP response properties versus conventional transient cVEMPs. Thirty five young, healthy adults (ages 19–23) with normal audiograms and no known vestibular lesions participated in this study. AMcVEMPs were elicited with bone-conducted tones with a carrier frequency of 500 Hz and an amplitude modulation frequency of 37 Hz, and transient cVEMPs were elicited by 4-0-4 Blackman-gated 500 Hz tonebursts …

Remote-Frequency Masking And Speech Perception In Adults, Taylor L. Arbogast

Dissertations, 2020-current

The primary purpose of this study is threefold: to use SRT measurements to examine the effect of various remote-frequency, narrowband maskers on adult’s perception of narrowband speech, to compare the performance between low and high band speech stimuli, and to evaluate the combination of these approaches by examining the correlation between the masking effect observed with speech and pure tone stimuli. Twelve subjects aged 22-34, with hearing thresholds no worse than 15 dB HL for frequencies 500-8000 Hz, participated in two listening tasks. In the speech perception task, coordinate response measure (CRM) sentences and their maskers were separately filtered into …