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Full-Text Articles in Medicine and Health Sciences

Effect Of Sound Source Location And Spatial Hearing On The Vestibulo-Ocular Reflex (Vor), Mary Easterday Dec 2020

Effect Of Sound Source Location And Spatial Hearing On The Vestibulo-Ocular Reflex (Vor), Mary Easterday

Theses and Dissertations (ETD)

Accurate measurement of the vestibulo-ocular reflex (VOR) is imperative in differential diagnosis of vestibular disorders and balance function. However, the assessment protocol faces a number of limitations, including the need to control for extra- vestibular sensory factors such as hearing. Previous research has shown that the use of an auditory stimulus can have a significant effect on functional measures of balance, and many have contributed effects to be the result of spatial hearing. However, no studies have directly assessed the effect of speaker location on the VOR nor investigated correlations of functional spatial hearing with the VOR. Therefore, the aims …


Induction Of Nocebo Effects By Verbal Suggestions During The Caloric Test, Abbey Weist May 2020

Induction Of Nocebo Effects By Verbal Suggestions During The Caloric Test, Abbey Weist

Dissertations, 2020-current

The caloric test is the most frequently performed vestibular diagnostic test and is considered the “gold-standard” for the assessment of the peripheral vestibular system. Using a warm or cool stimulus, the caloric test alters the temperature gradient in the vestibular system resulting in nausea and dizziness. The nocebo effect is a phenomenon that can occur when negative expectations result in negative effects. No study has examined whether expectations of nausea and dizziness during the caloric test enhance the experience of unwanted symptoms. The purpose of this investigation was to determine whether a nocebo response can be elicited during the caloric …


Vestibular Evoked Myogenic Potentials And Postural Control In Adults With Age-Related Hearing Loss, Steven Michael Doettl May 2020

Vestibular Evoked Myogenic Potentials And Postural Control In Adults With Age-Related Hearing Loss, Steven Michael Doettl

Theses and Dissertations (ETD)

It is well-documented that auditory thresholds decrease with age, which can be referred to as Age-related hearing loss (ARHL). ARHL is one of the most common conditions affecting older adults and is associated with several conditions including decreased postural stability and falls. Age-related changes to auditory function have been attributed to, through histopathological study, specific degradation of the sensory, supporting, and afferent structures of the cochlea. Vestibular function, as measured through vestibular evoked myogenic potentials (VEMPs) also show decreases with age. VEMPs are a measurement of evoked potentials generated by auditory stimulation of the utricle and saccule measured through a …


Inner Ear Disorders Associated With Hearing And Vestibular Loss: A Case Series, Kelly Retzlaff Jan 2020

Inner Ear Disorders Associated With Hearing And Vestibular Loss: A Case Series, Kelly Retzlaff

AuD Capstone Projects - Communication Sciences and Disorders

Introduction: Sudden sensorineural hearing loss (SSNHL), a hearing loss of at least 30 dB at three or more consecutive frequencies within a 72-hour period, is typically idiopathic. Potential causes are thought to include viral, autoimmune, vascular, neurologic, neoplastic, or traumatic origins. Treatment consists of steroids. Poor patient follow up and compliance with rehabilitation negatively affect outcomes. Poor follow-up also results in the inadequate medical documentation of outcomes. Case Presentation: a 20-year old female presented with unilateral SSNHL with high-frequency tinnitus in the right ear. Her audiological history includes a known profound hearing loss in the left ear, as well as, …