Why the study?
Does brief pulse ECT induce hemispheric lateralization of EEG slowing related to therapeutic outcome in melancholic men?
Does brief pulse ECT induce hemispheric lateralization of EEG slowing related to therapeutic outcome in melancholic men?
Brief pulse ECT does not appear to produce the same lateralization of EEG slowing related to therapeutic outcome as previously reported for sine wave ECT, suggesting lateralization is not central to its antidepressant effects.
Brief-pulse ECT lacks detectable EEG lateralization linked to outcome; challenges prior sine-wave reports and leaves open mechanistic relevance.
In a visual analysis of electroencephalograms (EEGs) obtained in 33 melancholic men before and after six brief pulse right unilateral, left unilateral, or bilateral electroconvulsive therapy (ECT) treatments, the authors were unable to detect the relation between therapeutic outcome and differential hemispheric lateralization of ECT-induced EEG slowing that had been reported previously for sine wave ECT at the same clinical site. These results may be related to differences in neurophysiologic effects between sine wave and brief pulse ECT, and do not support the hypothesis that lateralization of ECT-induced EEG slowing is central to the antidepressant effects of ECT.
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Abrams et al. (1992) studied this question.
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