• Neuropsychobiology · Jan 2003

    Pretreatment interhemispheric EEG coherence is related to seizure duration in right unilateral electroconvulsive therapy.

    • Georg Adler, Wolfgang Hey, Caroline Achenbach, and Andreas Kinzer.
    • Department of Psychiatry and Clinical Neurophysiology Service, Central Institute of Mental Health, Mannheim, Germany. adler@as200.zi-mannheim.de
    • Neuropsychobiology. 2003 Jan 1; 48 (3): 143-5.

    ObjectiveThe relationships between pretreatment EEG parameters and seizure duration in electroconvulsive therapy (ECT) were studied in order to provide information useful for the prediction of ECT-induced seizures.MethodsIn 16 depressed patients treated with right unilateral ECT, pretreatment absolute band powers and interhemispheric coherences were assessed and correlated with the duration of the first ECT-induced seizure.ResultsInterhemispheric coherence for the central electrodes in the fast alpha band was positively correlated with seizure duration.ConclusionsInterhemispheric coherence may reflect, in a quantitative manner, cortico-cortical transmission via commissural pathways required for the generation of a generalized seizure through right unilateral stimulation. It may represent a useful parameter with respect to seizure threshold with potential therapeutic implications for ECT.Copyright 2003 S. Karger AG, Basel

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