A re-evaluation of the relation between physiological channel interaction and electrode pitch ranking in cochlear implants (L)

Michelle L. Hughes

    Research output: Contribution to journalArticlepeer-review

    25 Scopus citations

    Abstract

    Spatial excitation patterns in cochlear implant users can be measured with the electrically evoked compound action potential (ECAP). This study examined whether the relative separation of ECAP excitation patterns for two electrodes was correlated with the ability to discriminate those electrodes on the basis of pitch. Significant correlations were found for nine of the ten subjects. Electrodes with significant relative overlap of ECAP spatial excitation patterns were generally more difficult to distinguish on the basis of pitch. Pitch-ranking ability and overlap of ECAP patterns were both affected by the relative separation between electrodes in each pair. With increased separation between electrodes, pitch ranking improved significantly, and ECAP spatial excitation patterns showed significantly less overlap.

    Original languageEnglish (US)
    Pages (from-to)2711-2714
    Number of pages4
    JournalJournal of the Acoustical Society of America
    Volume124
    Issue number5
    DOIs
    StatePublished - 2008

    ASJC Scopus subject areas

    • Arts and Humanities (miscellaneous)
    • Acoustics and Ultrasonics

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