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    Cognitive and Electrophysiologic Correlates of Listening in Noise

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    Author
    Everett, Alyssa J.
    Issue Date
    2018
    Keywords
    Acceptable Noise Level
    Cognitive Load
    Cortical Auditory Evoked Potential
    Electrophysiology
    Hearing in Noise
    Advisor
    Cone, Barbara
    
    Metadata
    Show full item record
    Publisher
    The University of Arizona.
    Rights
    Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction, presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
    Abstract
    People with hearing loss experience many challenges when adjusting to using amplification (hearing aids). An almost universal complaint is difficulty hearing in the presence of noise. The Acceptable Noise Level (ANL) test is used to estimate a person’s tolerance for listening with noise present. Better tolerance is associated with greater success with amplification, as measured by duration and consistency of use. Yet, there are unknowns about why this should be so. One question is whether the ANL is related to the brain’s ability to inhibit or suppress noise. Another is whether ANL is a stable value or if it changes when challenging cognitive tasks are performed. Two experiments in this study analyze the effects of a cognitive load on unilaterally and bilaterally presented ANL scores and their relationship to the sensory gating mechanism measured through cortical auditory evoked potentials (CAEP). Results indicated a significant increase in the ANL score measured with the addition of a cognitive load in the unilateral and bilateral condition. A number of statistical analyses were performed to assess differences between measurements of CAEPs and behavioral results and none were statistically significant.
    Type
    text
    Electronic Dissertation
    Degree Name
    Au.D.
    Degree Level
    doctoral
    Degree Program
    Graduate College
    Speech, Language, & Hearing Sciences
    Degree Grantor
    University of Arizona
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