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 journalArticle

22 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 - Dec 1 2008

ASJC Scopus subject areas

  • Arts and Humanities (miscellaneous)
  • Acoustics and Ultrasonics

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