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Electroencephalographic changes as prognostic indicators after psychosurgery

B M Evans, P K Bridges, J R Bartlett

    Journal of Neurology, Neurosurgery, and Psychiatry
    |May 1, 1981
    PubMed
    Summary
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    Electroencephalography (EEG) after psychosurgery revealed frontal slow waves. Early EEG patterns, specifically frontal slow waves two weeks post-operation, correlated with long-term clinical outcomes in patients.

    Area of Science:

    • Neuroscience
    • Clinical Neurology
    • Psychiatry

    Background:

    • Psychosurgery involves brain surgery to treat mental disorders.
    • Assessing the efficacy of psychosurgery is crucial for patient outcomes.
    • Objective biomarkers for predicting psychosurgical success are needed.

    Purpose of the Study:

    • To investigate the utility of electroencephalography (EEG) in predicting clinical outcomes after psychosurgery.
    • To identify early electrophysiological markers associated with treatment response.

    Main Methods:

    • Electroencephalography (EEG) recordings were performed on 35 patients.
    • Recordings were taken pre-operation, two weeks post-operation, and six months post-operation.
    • Correlation analysis was used to link EEG findings with clinical outcomes one year later.

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    Main Results:

    • Post-psychosurgery EEG commonly showed frontal slow activity and enhanced background activity.
    • The degree and spread of frontal slow waves at two weeks post-operation significantly correlated with clinical outcomes.
    • This suggests an early, objective predictor of treatment response.

    Conclusions:

    • Early post-psychosurgery EEG patterns, particularly frontal slow waves, can predict long-term clinical outcomes.
    • EEG offers a potential objective measure for assessing psychosurgery efficacy.
    • Further research can refine EEG as a biomarker in psychiatric surgery.