The article you requested is

Brief Pulse and Ultrabrief Pulse Right Unilateral Electroconvulsive Therapy (ECT) for Major Depression: Efficacy, Effectiveness, and Cognitive Effects

J Clin Psychiatry 2014;75(7):777 [letter]

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To the Editor: We appreciate the contribution to the electroconvulsive therapy (ECT) literature of Spaans and colleagues’ careful study comparing brief pulse and ultrabrief pulse stimuli. However, given the study limitations, we suggest that it is premature to conclude that right unilateral (RUL) ultrabrief pulse ECT confers inferior efficacy and no cognitive advantage.

ECT was given twice per week and at 8 × seizure threshold, major technique differences from previously published studies, which may have reduced efficacy of ultrabrief pulse ECT as well as cognitive effects of ultrabrief pulse ECT.