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Related Experiment Videos

Auditory/visual speech perception by cochlear implant users and hearing aid wearers.

J L Danhauer, J D Erratt, B J Edgerton

    The American Journal of Otology
    |September 1, 1986
    PubMed
    Summary

    Cochlear implants (CI) and traditional hearing aids (HA) improve speech perception. Both devices leverage visual cues, with CI users focusing on duration and sonorancy, while HA users utilize more features for better auditory-visual integration.

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    Area of Science:

    • Audiology
    • Speech-Language Pathology
    • Biomedical Engineering

    Background:

    • Profound hearing impairment significantly impacts speech perception.
    • Cochlear implants (CI) and traditional hearing aids (HA) are common auditory prostheses.
    • Understanding speech perception mechanisms is crucial for device development and rehabilitation.

    Purpose of the Study:

    • To compare auditory/visual speech perception between CI and HA users.
    • To identify features utilized by each group in auditory and visual modes.
    • To assess the integration of auditory and visual cues in speech perception.

    Main Methods:

    • Assessed speech perception using consonant-vowel-consonants (CVCs), vowel-consonant-vowels (VCVs), and sentences.
    • Presented stimuli in auditory, visual, and auditory-visual modes.

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  • Analyzed subjects' verbal responses and confusion matrices.

    • Main Results:

    • Significant differences were found across groups, stimuli, and conditions.
    • Visual mode: Both groups used place of articulation features.
    • Auditory mode: CI users focused on duration and sonorancy; HA users utilized additional features like sibilancy and voicing.
    • Auditory-visual mode: Both groups improved scores through cue integration.

    Conclusions:

    • Both cochlear implants and hearing aids enhance speech perception.
    • Different feature utilization patterns exist between CI and HA users.
    • Auditory-visual cue integration significantly benefits speech perception for both groups.