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Related Experiment Videos

Auditory prostheses research with multiple channel intracochlear stimulation in man

D K Eddington, W H Dobelle, D E Brackmann

    The Annals of Otology, Rhinology, and Laryngology
    |November 1, 1978
    PubMed
    Summary

    Multichannel cochlear implants, unlike single-channel devices, can generate complex neural patterns for speech discrimination. This study shows promising results for artificial hearing using multichannel cochlear stimulation.

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    Area of Science:

    • Neuroscience
    • Biomedical Engineering
    • Otolaryngology

    Background:

    • Single-channel cochlear implants aid lip-reading but don't provide intelligible speech.
    • Multichannel electrode arrays leverage the cochlea's tonotopic organization for improved auditory perception.

    Purpose of the Study:

    • To evaluate the feasibility of multichannel cochlear stimulation for artificial hearing.
    • To investigate speech discrimination and sound perception capabilities with multichannel implants.

    Main Methods:

    • Implantation of multichannel electrodes in the cochleas of four volunteers.
    • Data collection focused on two subjects with varying degrees of deafness.
    • Experiments included pitch and loudness discrimination, and tune recognition.

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    Main Results:

    • Place pitch and periodicity pitch were observed in all five volunteers.
    • Pitch-matching experiments aligned with cochlear tonotopic maps.
    • A pitch continuum was achievable through combined place and periodicity pitch modulation.
    • One subject demonstrated simple melody recognition using periodicity pitch cues.

    Conclusions:

    • Multichannel cochlear stimulation shows feasibility for artificial hearing.
    • Subjective sensations remained stable long-term, indicating potential for sustained benefit.
    • Results support the advancement of cochlear implant technology for speech understanding.