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Related Experiment Videos

Cochlear pathology. Hazards of long-term implants.

D Sutton

    Archives of Otolaryngology (Chicago, Ill. : 1960)
    |March 1, 1984
    PubMed
    Summary

    Multichannel cochlear implants may alter inner ear structures due to electrical stimulation. Monitoring auditory brain-stem responses can help detect these progressive changes in implanted cochleas.

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    Musculoskeletal science & practice·2018

    Area of Science:

    • Otoacoustic Emissions
    • Auditory Neuroscience
    • Biomedical Engineering

    Background:

    • Multichannel intrascalar or modiolar implants are known to cause long-term cochlear structural changes.
    • Experimental studies link nerve-cell loss and osteogenesis to electrical stimulation from implants.
    • Low charge densities are hypothesized to mitigate these intracochlear alterations.

    Purpose of the Study:

    • To investigate the potential for cochlear implants to induce structural changes.
    • To explore middle-ear stimulation as an alternative to intracochlear implantation.
    • To assess the utility of auditory brain-stem responses in monitoring cochlear health post-implantation.

    Main Methods:

    • Review of diverse evidence on cochlear implant-induced structural changes.
    • Analysis of experimental studies correlating electrical stimulation with cellular and tissue changes.
    • Evaluation of middle-ear stimulation as a less invasive approach.
    • Monitoring of electrically produced auditory brain-stem responses.

    Main Results:

    • Evidence suggests multichannel implants can lead to long-term cochlear structural modifications.
    • Nerve-cell loss and osteogenesis are associated with electrical stimulation.
    • Middle-ear stimulation shows promise as an alternative, though its efficacy requires further characterization.
    • Auditory brain-stem responses can potentially detect progressive pathological changes.

    Conclusions:

    • Cochlear implants carry a risk of inducing structural changes, potentially mitigated by low charge densities.
    • Middle-ear stimulation offers a potential alternative to intracochlear devices.
    • Monitoring auditory brain-stem responses is a valuable tool for assessing the health of the implanted cochlea.

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