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Related Experiment Videos

The cochlear implant; basic principles.

D E Brackmann

    The Laryngoscope
    |March 1, 1976
    PubMed
    Summary
    This summary is machine-generated.

    Cochlear implants offer hope for hearing restoration by stimulating remaining auditory neurons. While current devices aid in lip-reading, further advancements are needed for significant speech discrimination.

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    Area of Science:

    • Otolaryngology
    • Biomedical Engineering
    • Neuroscience

    Background:

    • Cochlear implants are controversial due to conflicting success and failure reports.
    • Understanding the device's development and current status is crucial for clinicians.
    • Patient selection is key, requiring viable auditory neurons for cochlear implant benefit.

    Purpose of the Study:

    • To review the development and summarize the present status of cochlear implants.
    • To provide clinicians with an understanding to better evaluate cochlear implant technology.
    • To assess the feasibility of long-term auditory nerve stimulation and information transfer.

    Main Methods:

    • Patient selection involves electrical stimulation of the auditory nerve via a needle on the promontory.

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  • Feasibility of long-term stimulation is assessed by evaluating auditory nerve survival and implant-induced damage.
  • Information transfer capabilities are explored through single-channel and multi-electrode stimulation.

    • Main Results:

    • Electrical stimulation can identify suitable cochlear implant candidates with viable auditory neurons.
    • Studies indicate the auditory nerve can survive implantation and long-term stimulation.
    • Single-channel stimulation provides limited information transfer, insufficient for speech discrimination.
    • Multi-electrode stimulation shows promise for improved information transfer and speech discrimination.

    Conclusions:

    • Cochlear implants can benefit patients with hair cell loss by providing sound perception and aiding lip-reading.
    • Long-term auditory nerve stimulation appears feasible with current electrode technology.
    • Further research with multi-electrode devices is needed to achieve significant speech discrimination.