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Related Experiment Videos

A technique for detecting the ipsilateral acoustic reflex

R H Margolis, R H Wilson, K J Van Camp

    The Journal of the Acoustical Society of America
    |July 1, 1982
    PubMed
    Summary

    This study introduces a new method for detecting the ipsilateral acoustic reflex using a single tone. This technique avoids signal interactions, offering a potentially quicker and more reliable audiological measurement.

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    Response to Cruz.

    American journal of audiology·2015

    Area of Science:

    • Audiology
    • Otology
    • Biomedical Engineering

    Background:

    • Conventional methods for detecting the acoustic reflex often involve multiple signals, which can lead to artifactual responses.
    • The acoustic reflex is a crucial diagnostic tool in audiology for assessing middle ear function and neurological integrity.

    Purpose of the Study:

    • To explore a novel technique for measuring the ipsilateral acoustic reflex using a single acoustic signal.
    • To evaluate the efficacy and reliability of this single-signal method in estimating acoustic reflex thresholds.

    Main Methods:

    • A single 226-Hz tone was employed to both elicit and measure the impedance changes associated with the acoustic reflex.
    • This approach aimed to circumvent artifacts arising from the interaction of dual acoustic signals in the same ear.
    • Reflex thresholds were measured in six subjects (five normal, one with otosclerosis).

    Main Results:

    • The single-signal method yielded average reflex threshold estimates of 99.8 dB SPL for normal-hearing subjects.
    • These results closely aligned with previously published data from conventional methods.
    • The subject with otosclerosis did not exhibit an acoustic reflex, consistent with expectations for this condition.

    Conclusions:

    • The explored technique demonstrates potential as a quick and reliable method for acoustic reflex measurement.
    • By eliminating dual-signal interactions, this approach may reduce measurement artifacts.
    • Further refinement could establish this single-signal method as a valuable tool in audiological diagnostics.

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