[Show abstract][Hide abstract] ABSTRACT: Electroconvulsive therapy (ECT) is currently the most effective treatment for severe depression. However, it is frequently associated with negative cognitive side effects. Magnetic seizure therapy (MST) depicts an alternative, although experimental, convulsive treatment for major depression. Initial results suggest comparable antidepressant effects accompanied by a better side effect profile. However, no studies up to now have addressed acute retrieval disruption after MST in comparison to ECT. Therefore, we intended to broaden insight into the side effect profile of MST compared to ECT by examining the disruption of acute verbal memory processes after treatment.
[Show abstract][Hide abstract] ABSTRACT: For many patients with neuropsychiatric illnesses, standard psychiatric treatments with mono or combination pharmacotherapy, psychotherapy, and transcranial magnetic stimulation are ineffective. For these patients with treatment-resistant neuropsychiatric illnesses, a main therapeutic option is electroconvulsive therapy (ECT). Decades of research have found ECT to be highly effective; however, it can also result in adverse neurocognitive effects. Specifically, ECT results in disorientation after each session, anterograde amnesia for recently learned information, and retrograde amnesia for previously learned information. Unfortunately, the neurocognitive effects and underlying mechanisms of action of ECT remain poorly understood. The purpose of this paper was to synthesize the multiple moderating and mediating factors that are thought to underlie the neurocognitive effects of ECT into a coherent model. Such factors include demographic and neuropsychological characteristics, neuropsychiatric symptoms, ECT technical parameters, and ECT-associated neurophysiological changes. Future research is warranted to evaluate and test this model, so that these findings may support the development of more refined clinical seizure therapy delivery approaches and efficacious cognitive remediation strategies to improve the use of this important and widely used intervention tool for neuropsychiatric diseases.
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