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However, research over the last 30 years has discovered that several parameters of the electroconvulsive therapy stimulus can have a significant impact on efficacy and cognitive side effects. The stimulus dose relative to seizure threshold was shown to significantly affect efficacy, especially for right unilateral electroconvulsive therapy, where suprathreshold doses in the vicinity of 5\u20136 times seizure threshold were far more efficacious than doses closer to threshold. However, this did not hold for bitemporal electroconvulsive therapy, where near-threshold stimuli were equally effective as suprathreshold stimuli. Then, changes in stimulus pulse width were found to also have a significant impact on both efficacy and side effects, with ultrabrief pulse widths of 0.3 ms having significantly fewer cognitive side effects in unilateral electroconvulsive therapy than standard brief pulse widths of 1.0 ms, with only slightly reduced efficacy. Therefore, choosing the optimum electroconvulsive therapy prescription for an individual patient now requires consideration of placement, pulse width and stimulus dose relative to seizure threshold, and how these three interact with each other. This viewpoint aims to raise awareness of these issues for psychiatrists involved in electroconvulsive therapy practice.<\/jats:p>","DOI":"10.1177\/00048674231183368","type":"journal-article","created":{"date-parts":[[2023,6,24]],"date-time":"2023-06-24T15:51:17Z","timestamp":1687621877000},"page":"1202-1207","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":10,"title":["Prescribing electroconvulsive therapy for depression: Not as simple as it used to be"],"prefix":"10.1177","volume":"57","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7180-1807","authenticated-orcid":false,"given":"Shane","family":"Gill","sequence":"first","affiliation":[{"name":"SAPBTC, Glenside Health Service, Glenside, SA, Australia"},{"name":"Discipline of Psychiatry, The University of Adelaide, Adelaide, SA, 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