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Human auditory evoked responses during hangover.

T Järvilehto, M L Laakso, V Virsu

    Psychopharmacologia
    |May 28, 1975
    PubMed
    Summary
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    Hangover affects auditory evoked responses (AER), showing smaller initial responses but similar later ones. These changes mirror alcohol intoxication, not increased peripheral sensitivity.

    Area of Science:

    • Neuroscience
    • Auditory Neuroscience
    • Human Physiology

    Background:

    • Hangover is associated with subjective symptoms of hyperexcitability.
    • The neurophysiological underpinnings of hangover symptoms require further investigation.

    Purpose of the Study:

    • To investigate whether hangover-induced hyperexcitability correlates with changes in auditory evoked responses (AER).
    • To compare AER characteristics during hangover, tired control, and normal control states.

    Main Methods:

    • Auditory evoked responses (AER) were recorded in 9 subjects using click trains (1 click/sec).
    • Measurements were taken under three conditions: hangover, tired control, and normal control.
    • Audiograms were also measured to assess auditory threshold sensitivity.

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    Main Results:

    • AERs to the first click in a train were significantly smaller during hangover compared to control states.
    • AER amplitudes during stimulus train repetition were similar across all conditions.
    • Audiograms showed only a very slight decrease in auditory threshold sensitivity during hangover.

    Conclusions:

    • The observed effects of hangover on AERs resemble those of acute alcohol intoxication.
    • Hangover-related symptoms of hyperexcitability are not explained by increased peripheral auditory sensitivity.