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Structural changes induced by electroconvulsive therapy are associated with clinical outcome
Peter C R Mulders1, Alberto Llera2, Christian F Beckmann3
1Department of Psychiatry, Radboud University Medical Center, Nijmegen, the Netherlands; Donders Institute for Brain, Cognition and Behavior, Centre for Cognitive Neuroimaging, Nijmegen, the Netherlands.
Brain Stimulation
|April 15, 2020
Summary
Structural brain changes in specific areas predict response to electroconvulsive therapy (ECT) for major depressive disorder. This research identifies key brain regions related to ECT
Area of Science:
- Neuroimaging
- Psychiatry
- Brain Anatomy
Background:
- Electroconvulsive therapy (ECT) is a highly effective treatment for major depressive disorder.
- Understanding the neurobiological underpinnings of ECT's efficacy is crucial for advancing antidepressant research.
Purpose of the Study:
- To investigate the relationship between structural brain volumetric changes and clinical response to ECT.
- To identify specific brain regions associated with treatment response and electrode placement (unilateral vs. bilateral).
Main Methods:
- Longitudinal structural magnetic resonance imaging (MRI) data from 192 subjects were analyzed.
- Recursive feature elimination was used to identify relevant volumetric changes for classifying treatment response.
- Linear classifiers were trained to predict response and electrode placement based on structural data.
Main Results:
- A pattern of structural changes in cortical midline, striatal, and lateral prefrontal areas accurately predicted ECT responders (75% accuracy).
- Left-sided mediotemporal structural changes distinguished unilateral from bilateral electrode placement (81% accuracy).
Conclusions:
- Multivariate analysis demonstrates that structural brain changes are relevant to clinical outcomes in ECT.
- The identified pattern of structural change differs from previously studied mediotemporal regions.
