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Related Experiment Videos

Brain stem auditory evoked potentials: applications in clinical audiology

D Noffsinger, C G Fowler

    Bulletin of the Los Angeles Neurological Societies
    |January 1, 1982
    PubMed
    Summary

    Auditory brain stem response (ABR) measures electric events in the brain stem using acoustic stimuli. This technique is valuable for assessing hearing sensitivity and diagnosing auditory disorders, especially in non-responsive patients.

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    Area of Science:

    • Neuroscience
    • Audiology
    • Bioengineering

    Background:

    • Auditory brain stem response (ABR) involves detecting electric events in the brain stem.
    • These responses are generated by acoustic stimuli like clicks or tonal pips.
    • ABR signals are small, requiring digital averaging to isolate from physiological noise.

    Purpose of the Study:

    • To detail the principles and applications of Auditory Brain Stem Response (ABR).
    • To highlight ABR's utility in audiological evaluations.
    • To explain ABR's role in diagnosing auditory pathway disorders.

    Main Methods:

    • Recording vertex-positive, time-locked electric events using surface electrodes.
    • Employing 1000-2000 acoustic stimuli (clicks or tonal pips) per recording.
    • Utilizing digital averaging to enhance signal detection from background noise.

    Main Results:

    • ABR potentials are reliably elicited near behavioral hearing thresholds.
    • Specific potentials are associated with distinct brain stem auditory pathway locations.
    • The technique allows for objective hearing assessment.

    Conclusions:

    • Auditory Brain Stem Response (ABR) is a crucial tool in audiology.
    • It provides objective hearing sensitivity measurements, essential for patients unable to provide voluntary responses.
    • ABR aids in diagnosing the origin of auditory pathway dysfunctions.

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