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Delayed visual evoked potentials in chronic alcoholism.

H M Meinck, L Adler, K Räder

    Journal of Neurology
    |June 1, 1986
    PubMed
    Summary
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    Visual evoked potentials (VEPs) reveal significant abnormalities in chronic alcoholics, indicating potential neurological changes. These VEP changes appear specific to alcoholism and not linked to other systemic effects of alcohol.

    Area of Science:

    • Neuroscience
    • Clinical Neurology
    • Ophthalmology

    Background:

    • Chronic alcoholism is associated with various neurological deficits.
    • Visual evoked potentials (VEPs) are a sensitive tool for assessing the integrity of the visual pathway.

    Purpose of the Study:

    • To investigate visual evoked potential (VEP) abnormalities in chronic alcoholics.
    • To determine the correlation of VEP changes with alcoholism type and other clinical factors.

    Main Methods:

    • Pattern reversal visual evoked potentials (VEPs) were recorded in 80 chronic alcoholics and 43 healthy controls.
    • VEP parameters analyzed included P2 latency, inter-eye differences, and waveform morphology.
    • Statistical analysis was performed to correlate VEP findings with Jellinek's alcoholism classification and clinical data.

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    Main Results:

    • Abnormal P2 latencies and inter-eye differences were detected in 30% (98% confidence limit) and 10% (99.9% confidence limit) of alcoholics.
    • Abnormal VEP waveforms were observed in 12.5% and 7.5% of the patient group.
    • VEP abnormalities correlated with Jellinek's gamma-type alcoholism but showed minimal correlation with other clinical or laboratory data.

    Conclusions:

    • Chronic alcoholism is associated with significant visual pathway dysfunction, as evidenced by VEP abnormalities.
    • These VEP alterations appear to be a specific consequence of alcoholism, independent of other systemic toxic effects.