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Evaluation of a cochlear prosthesis using connected discourse tracking.

H Levitt, S B Waltzman, W H Shapiro

    Journal of Rehabilitation Research and Development
    |January 1, 1986
    PubMed
    Summary
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    This study evaluated multichannel cochlear prostheses using Connected Discourse Tracking. Results show significant learning effects, with top users exceeding 90 words-per-minute, highlighting prosthesis benefits alongside learning.

    Area of Science:

    • Audiology
    • Biomedical Engineering
    • Speech-Language Pathology

    Background:

    • Cochlear implants are vital for hearing restoration.
    • Evaluating their effectiveness requires understanding user learning.
    • Connected Discourse Tracking (CDT) is a method for assessing speech recognition.

    Purpose of the Study:

    • To evaluate multichannel cochlear prostheses using CDT.
    • To quantify learning effects in cochlear implant users.
    • To develop a method for assessing prosthesis benefits considering learning.

    Main Methods:

    • Connected Discourse Tracking (CDT) was employed.
    • Data collected from five subjects over 10 weeks.
    • Orthogonal polynomials used for precise learning curve fitting.

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    Main Results:

    • Significant learning effects observed with and without the prosthesis.
    • Learning curves varied in shape and average learning rate.
    • Two subjects achieved over 90 words-per-minute tracking rates.

    Conclusions:

    • Cochlear prosthesis use leads to substantial improvements in speech tracking.
    • A novel method accounts for learning effects in evaluating prosthesis benefits.
    • Individual learning trajectories impact outcomes with cochlear implants.