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Stimulation strength and focality of electroconvulsive therapy with individualized current amplitude: a preclinical study.

Publication ,  Journal Article
Lee, WH; Lisanby, SH; Laine, AF; Peterchev, AV
Published in: Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Conference
December 1, 2012

This study investigates the stimulation strength and focality of electroconvulsive therapy (ECT) with individualized current amplitude in a nonhuman primate (NHP) model. We generated an anatomically realistic finite element model of a NHP head incorporating tissue heterogeneity and white matter conductivity anisotropy based on structural magnetic resonance imaging (MRI) and diffusion tensor MRI data. The electric field spatial distributions of three conventional ECT electrode placements (bilateral, bifrontal, and right unilateral) and an experimental frontomedial electrode configuration were simulated. We calibrated the electric field maps relative to an empirical neural activation threshold and evaluated the stimulation strength and focality of the various ECT electrode configurations with individualized current amplitudes corresponding to the motor threshold and seizure threshold assessed in the anesthetized NHP. Understanding the stimulation strength and focality of various forms of ECT could provide insight into the mechanisms of therapeutic seizure induction, and could provide support for the clinical investigation of ECT with individualized current amplitude as an intervention with potentially improved risk/benefit ratio.

Duke Scholars

Published In

Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Conference

ISSN

1557-170X

Publication Date

December 1, 2012

Start / End Page

6430 / 6433
 

Citation

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Lee, W. H., Lisanby, S. H., Laine, A. F., & Peterchev, A. V. (2012). Stimulation strength and focality of electroconvulsive therapy with individualized current amplitude: a preclinical study. Conference Proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Conference, 6430–6433.
Lee, W. H., S. H. Lisanby, A. F. Laine, and A. V. Peterchev. “Stimulation strength and focality of electroconvulsive therapy with individualized current amplitude: a preclinical study.Conference Proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Conference, December 1, 2012, 6430–33.
Lee WH, Lisanby SH, Laine AF, Peterchev AV. Stimulation strength and focality of electroconvulsive therapy with individualized current amplitude: a preclinical study. Conference proceedings : . Annual International Conference of the IEEE Engineering in Medicine and Biology Society IEEE Engineering in Medicine and Biology Society Conference. 2012 Dec 1;6430–3.
Lee, W. H., et al. “Stimulation strength and focality of electroconvulsive therapy with individualized current amplitude: a preclinical study.Conference Proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Conference, Dec. 2012, pp. 6430–33.
Lee WH, Lisanby SH, Laine AF, Peterchev AV. Stimulation strength and focality of electroconvulsive therapy with individualized current amplitude: a preclinical study. Conference proceedings : . Annual International Conference of the IEEE Engineering in Medicine and Biology Society IEEE Engineering in Medicine and Biology Society Conference. 2012 Dec 1;6430–6433.

Published In

Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Conference

ISSN

1557-170X

Publication Date

December 1, 2012

Start / End Page

6430 / 6433