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Auditory brainstem responses in postconcussion syndrome

J H Noseworthy, J Miller, T J Murray

    Archives of Neurology
    |May 1, 1981
    PubMed
    Summary
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    Postconcussion syndrome may involve physical changes in the brainstem. Auditory brainstem responses showed significant delays in patients, indicating organic changes rather than purely psychogenic factors.

    Area of Science:

    • Neuroscience
    • Audiology
    • Neurology

    Background:

    • Head injuries can cause nerve fiber damage in the brainstem.
    • Postconcussion syndrome is often debated as either psychogenic or organic.

    Purpose of the Study:

    • To investigate auditory brainstem responses in patients with postconcussion syndrome.
    • To determine if objective neurological changes are present in postconcussion syndrome.

    Main Methods:

    • Recorded auditory brainstem responses in 11 patients with postconcussion syndrome.
    • Compared patient responses to 12 healthy control subjects.

    Main Results:

    • Patients with postconcussion syndrome exhibited significant delays in wave 3 of auditory brainstem responses.

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  • This delay suggests abnormalities in central auditory pathways, specifically around the superior olivary complex.

    • Conclusions:

    • Auditory brainstem response abnormalities provide evidence for organic changes in postconcussion syndrome.
    • Findings refute claims that postconcussion syndrome is solely psychogenic, supporting a neurological basis.