Current Distribution Measurements Within the Human Cochlea

Raymond C. Black, Graeme M. Clark, James F. Patrick

    Research output: Contribution to journalArticlepeer-review

    45 Citations (Scopus)


    The magnitudes of the currents returned through each ground electrode line of a multiple-electrode cochlear implant array were determined during surgical implantations on two patients. These were often found to be distributed widely to points far from the stimulus electrode site. Further measurements made in in vitro solutions demonstrated that the distributions were due largely to the ground electrode interface impedances being significantly larger than the fluidpath impedances, and demonstrated that distributions could be changed by modification of the ground electrode interface impedances.

    Original languageEnglish
    Pages (from-to)721-725
    Number of pages5
    JournalIEEE Transactions on Biomedical Engineering
    Issue number10
    Publication statusPublished - 1981


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