Interaural time processing when stimulus bandwidth differs at the two ears

Christopher A. Brown, William Yost

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    2 Citations (Scopus)

    Abstract

    Advances in the design of cochlear implants (CIs), as well as improved CI surgical techniques, have led to an increase in the number of patients who retain some residual low-frequency acoustic hearing in the implanted ear. Many of these patients also possess some hearing in the unimplanted ear. Although their low-frequency audiometric configurations will likely be asymmetrical across ears, they may nevertheless be able to process interaural time differences (ITDs) which might aid them in localizing sound sources and achieving a spatial release from masking. We recently published research (Brown and Yost 2011) showing how sensitivity to ITD differences was affected when the stimulus bandwidths were varied between the ears, to simulate asymmetrical hearing loss in the low-frequency region. We showed that ITD discrimination thresholds decreased as the bandwidth of the noise presented to one ear increased beyond that presented to the other ear. In the current experiment, we expand upon those conditions to further explore ITD processing in the presence of interaural spectral differences. ITD sensitivity was measured when a fixed band of noise was presented to one ear and the center frequency of a spectral band of the same width was moved upward in frequency in the other ear. The data suggest that listeners have difficulty attending to ITD differences in one spectral region when there are other spectral regions that contain conflicting or inconsistent spatial information, which is likely to be the case for many CI patients who possess bilateral residual hearing.

    Original languageEnglish (US)
    Title of host publicationBasic Aspects of Hearing
    Subtitle of host publicationPhysiology and Perception
    Pages247-254
    Number of pages8
    DOIs
    StatePublished - Oct 2 2013

    Publication series

    NameAdvances in Experimental Medicine and Biology
    Volume787
    ISSN (Print)0065-2598

    Fingerprint

    Audition
    Cochlear implants
    Ear
    Bandwidth
    Processing
    Cochlear Implants
    Hearing
    Speech intelligibility
    Noise
    Acoustics
    Acoustic waves
    Hearing Loss
    Experiments
    Research

    ASJC Scopus subject areas

    • Biochemistry, Genetics and Molecular Biology(all)

    Cite this

    Brown, C. A., & Yost, W. (2013). Interaural time processing when stimulus bandwidth differs at the two ears. In Basic Aspects of Hearing: Physiology and Perception (pp. 247-254). (Advances in Experimental Medicine and Biology; Vol. 787). https://doi.org/10.1007/978-1-4614-1590-9-28

    Interaural time processing when stimulus bandwidth differs at the two ears. / Brown, Christopher A.; Yost, William.

    Basic Aspects of Hearing: Physiology and Perception. 2013. p. 247-254 (Advances in Experimental Medicine and Biology; Vol. 787).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Brown, CA & Yost, W 2013, Interaural time processing when stimulus bandwidth differs at the two ears. in Basic Aspects of Hearing: Physiology and Perception. Advances in Experimental Medicine and Biology, vol. 787, pp. 247-254. https://doi.org/10.1007/978-1-4614-1590-9-28
    Brown CA, Yost W. Interaural time processing when stimulus bandwidth differs at the two ears. In Basic Aspects of Hearing: Physiology and Perception. 2013. p. 247-254. (Advances in Experimental Medicine and Biology). https://doi.org/10.1007/978-1-4614-1590-9-28
    Brown, Christopher A. ; Yost, William. / Interaural time processing when stimulus bandwidth differs at the two ears. Basic Aspects of Hearing: Physiology and Perception. 2013. pp. 247-254 (Advances in Experimental Medicine and Biology).
    @inproceedings{936737fdd39e4f859877d6950f1ca349,
    title = "Interaural time processing when stimulus bandwidth differs at the two ears",
    abstract = "Advances in the design of cochlear implants (CIs), as well as improved CI surgical techniques, have led to an increase in the number of patients who retain some residual low-frequency acoustic hearing in the implanted ear. Many of these patients also possess some hearing in the unimplanted ear. Although their low-frequency audiometric configurations will likely be asymmetrical across ears, they may nevertheless be able to process interaural time differences (ITDs) which might aid them in localizing sound sources and achieving a spatial release from masking. We recently published research (Brown and Yost 2011) showing how sensitivity to ITD differences was affected when the stimulus bandwidths were varied between the ears, to simulate asymmetrical hearing loss in the low-frequency region. We showed that ITD discrimination thresholds decreased as the bandwidth of the noise presented to one ear increased beyond that presented to the other ear. In the current experiment, we expand upon those conditions to further explore ITD processing in the presence of interaural spectral differences. ITD sensitivity was measured when a fixed band of noise was presented to one ear and the center frequency of a spectral band of the same width was moved upward in frequency in the other ear. The data suggest that listeners have difficulty attending to ITD differences in one spectral region when there are other spectral regions that contain conflicting or inconsistent spatial information, which is likely to be the case for many CI patients who possess bilateral residual hearing.",
    author = "Brown, {Christopher A.} and William Yost",
    year = "2013",
    month = "10",
    day = "2",
    doi = "10.1007/978-1-4614-1590-9-28",
    language = "English (US)",
    isbn = "9781461415893",
    series = "Advances in Experimental Medicine and Biology",
    pages = "247--254",
    booktitle = "Basic Aspects of Hearing",

    }

    TY - GEN

    T1 - Interaural time processing when stimulus bandwidth differs at the two ears

    AU - Brown, Christopher A.

    AU - Yost, William

    PY - 2013/10/2

    Y1 - 2013/10/2

    N2 - Advances in the design of cochlear implants (CIs), as well as improved CI surgical techniques, have led to an increase in the number of patients who retain some residual low-frequency acoustic hearing in the implanted ear. Many of these patients also possess some hearing in the unimplanted ear. Although their low-frequency audiometric configurations will likely be asymmetrical across ears, they may nevertheless be able to process interaural time differences (ITDs) which might aid them in localizing sound sources and achieving a spatial release from masking. We recently published research (Brown and Yost 2011) showing how sensitivity to ITD differences was affected when the stimulus bandwidths were varied between the ears, to simulate asymmetrical hearing loss in the low-frequency region. We showed that ITD discrimination thresholds decreased as the bandwidth of the noise presented to one ear increased beyond that presented to the other ear. In the current experiment, we expand upon those conditions to further explore ITD processing in the presence of interaural spectral differences. ITD sensitivity was measured when a fixed band of noise was presented to one ear and the center frequency of a spectral band of the same width was moved upward in frequency in the other ear. The data suggest that listeners have difficulty attending to ITD differences in one spectral region when there are other spectral regions that contain conflicting or inconsistent spatial information, which is likely to be the case for many CI patients who possess bilateral residual hearing.

    AB - Advances in the design of cochlear implants (CIs), as well as improved CI surgical techniques, have led to an increase in the number of patients who retain some residual low-frequency acoustic hearing in the implanted ear. Many of these patients also possess some hearing in the unimplanted ear. Although their low-frequency audiometric configurations will likely be asymmetrical across ears, they may nevertheless be able to process interaural time differences (ITDs) which might aid them in localizing sound sources and achieving a spatial release from masking. We recently published research (Brown and Yost 2011) showing how sensitivity to ITD differences was affected when the stimulus bandwidths were varied between the ears, to simulate asymmetrical hearing loss in the low-frequency region. We showed that ITD discrimination thresholds decreased as the bandwidth of the noise presented to one ear increased beyond that presented to the other ear. In the current experiment, we expand upon those conditions to further explore ITD processing in the presence of interaural spectral differences. ITD sensitivity was measured when a fixed band of noise was presented to one ear and the center frequency of a spectral band of the same width was moved upward in frequency in the other ear. The data suggest that listeners have difficulty attending to ITD differences in one spectral region when there are other spectral regions that contain conflicting or inconsistent spatial information, which is likely to be the case for many CI patients who possess bilateral residual hearing.

    UR - http://www.scopus.com/inward/record.url?scp=84884677391&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=84884677391&partnerID=8YFLogxK

    U2 - 10.1007/978-1-4614-1590-9-28

    DO - 10.1007/978-1-4614-1590-9-28

    M3 - Conference contribution

    C2 - 23716230

    AN - SCOPUS:84884677391

    SN - 9781461415893

    T3 - Advances in Experimental Medicine and Biology

    SP - 247

    EP - 254

    BT - Basic Aspects of Hearing

    ER -