Loudness balance between acoustic and electric stimulation by a patient with a multichannel cochlear implant

Michael Dorman, L. Smith, J. L. Parkin

    Research output: Contribution to journalArticle

    16 Scopus citations


    Estimates of loudness balance were obtained for acoustically and electrically presented 250 Hz sine signals from a patient who uses the Ineraid multichannel cochlear implant. Acoustic and electric loudness matching was possible because the patient evidenced a 25 dB HL threshold at 250 Hz in his nonimplanted ear. The level of the electrical stimulus in microamperes required for a balance of loudness grew linearly with equal increments in decibels for the acoustic stimulus. These data, in concert with the very limited data from previous studies, provide a rationale for using a logarithmic transformation of acoustic to electric intensity in signal processors for cochlear implants.

    Original languageEnglish (US)
    Pages (from-to)290-292
    Number of pages3
    JournalEar and hearing
    Issue number4
    StatePublished - Aug 1993


    ASJC Scopus subject areas

    • Otorhinolaryngology
    • Speech and Hearing

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