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Auditory brain stem potentials in monkey (M. mulatta) and man

A R Allen, A Starr

    Electroencephalography and Clinical Neurophysiology
    |July 1, 1978
    PubMed
    Summary
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    Auditory brain stem potentials in monkeys reveal distinct origins for brainwave components. These findings highlight similarities in auditory processing across species, including humans.

    Area of Science:

    • Neuroscience
    • Auditory Neuroscience
    • Electrophysiology

    Background:

    • Auditory brain stem potentials (ABPs) are crucial for understanding auditory pathway function.
    • Mapping ABPs in non-human primates provides insights into human auditory processing.

    Purpose of the Study:

    • To map auditory brain stem potentials in rhesus monkeys.
    • To investigate the origin of different waves within the auditory brain stem response.
    • To compare auditory brain stem potentials across species.

    Main Methods:

    • Monaural clicks were used to elicit auditory brain stem potentials in rhesus monkeys.
    • Potentials were recorded across the scalp, with no single reference point identified.
    • Latency and amplitude variations were analyzed in relation to stimulus parameters and recording site.

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    Main Results:

    • Recording site significantly influenced latency and amplitude of auditory brain stem potentials.
    • Waves I and V appear to originate from single generators, while waves II, III, and IV suggest bilateral origins.
    • Latency showed a linear relationship with stimulus intensity and click rate.
    • Amplitude variations were observed independently of stimulus changes.
    • Similar auditory brain stem potential patterns were noted in humans, monkeys, cats, and rats.

    Conclusions:

    • Auditory brain stem potential mapping in monkeys provides valuable data on auditory pathway organization.
    • The findings suggest species-similarities in the generation of auditory brain stem potentials.
    • Understanding these potentials aids in diagnosing auditory processing disorders.