• Login
    View Item 
    •   Home
    • UA Graduate and Undergraduate Research
    • UA Theses and Dissertations
    • Dissertations
    • View Item
    •   Home
    • UA Graduate and Undergraduate Research
    • UA Theses and Dissertations
    • Dissertations
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    All of UA Campus RepositoryCommunitiesTitleAuthorsIssue DateSubmit DateSubjectsPublisherJournalThis CollectionTitleAuthorsIssue DateSubmit DateSubjectsPublisherJournal

    My Account

    LoginRegister

    About

    AboutUA Faculty PublicationsUA DissertationsUA Master's ThesesUA Honors ThesesUA PressUA YearbooksUA CatalogsUA Libraries

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    Electrophysiologic Measures For Binaural Masking Level Difference

    • CSV
    • RefMan
    • EndNote
    • BibTex
    • RefWorks
    Thumbnail
    Name:
    azu_etd_17851_sip1_m.pdf
    Size:
    3.939Mb
    Format:
    PDF
    Download
    Author
    Ichiba, Kayla
    Issue Date
    2020
    Keywords
    acoustic change complex
    audiology
    auditory evoked potentials
    binaural masking level difference
    central auditory evoked potentials
    electrophysiology
    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
    This study evaluates the effect of phase change on auditory steady-state (ASSR), onset CAEP and ACC responses. The aim was to determine how phase change is encoded at lower levels of the auditory system and then processed at the cortical level. The test subjects were 23 young adults with normal hearing. ASSRs and stimulus-onset CAEPs were first recorded in a control condition using a 800 ms duration 500 Hz tone, amplitude modulated at 80 Hz, presented binaurally at 1/s. In the test condition, the phase of the 500 Hz tone was inverted 180° in one ear at 400 ms to evoke the ACC. Broad-band noise was introduced at an -5 dB SNR and the test condition repeated. Stimulus levels were varied to find the threshold of the ACC. Perceptual binaural masking level differences (BMLD) for a 500 Hz tone were also determined. At the phase change, ASSR amplitudes showed no difference between the in-phase and on-phase condition, and the ACC was 1.5-2.0 times larger than the onset CAEP response. This indicates amplification of the phase-change information in the ascending auditory pathway. These findings contribute to the development of an electrophysiological index for BMLD.
    Type
    text
    Electronic Dissertation
    Degree Name
    Au.D.
    Degree Level
    doctoral
    Degree Program
    Graduate College
    Speech, Language, & Hearing Sciences
    Degree Grantor
    University of Arizona
    Collections
    Dissertations

    entitlement

     
    The University of Arizona Libraries | 1510 E. University Blvd. | Tucson, AZ 85721-0055
    Tel 520-621-6442 | repository@u.library.arizona.edu
    DSpace software copyright © 2002-2017  DuraSpace
    Quick Guide | Contact Us | Send Feedback
    Open Repository is a service operated by 
    Atmire NV
     

    Export search results

    The export option will allow you to export the current search results of the entered query to a file. Different formats are available for download. To export the items, click on the button corresponding with the preferred download format.

    By default, clicking on the export buttons will result in a download of the allowed maximum amount of items.

    To select a subset of the search results, click "Selective Export" button and make a selection of the items you want to export. The amount of items that can be exported at once is similarly restricted as the full export.

    After making a selection, click one of the export format buttons. The amount of items that will be exported is indicated in the bubble next to export format.