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Phys Med Biol. 2008 Jun 7;53(11):N219-25. doi: 10.1088/0031-9155/53/11/N03. Epub 2008 May 19.

Determination of optimal electrode positions for transcranial direct current stimulation (tDCS).

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1
Department of Biomedical Engineering, Yonsei University, Wonju 220-710, Korea. ich@yonsei.ac.kr

Abstract

The present study introduces a new approach to determining optimal electrode positions in transcranial direct current stimulation (tDCS). Electric field and 3D conduction current density were analyzed using 3D finite element method (FEM) formulated for a dc conduction problem. The electrode positions for minimal current injection were optimized by changing the Cartesian coordinate system into the spherical coordinate system and applying the (2+6) evolution strategy (ES) algorithm. Preliminary simulation studies applied to a standard three-layer head model demonstrated that the proposed approach is promising in enhancing the performance of tDCS.

PMID:
18490807
DOI:
10.1088/0031-9155/53/11/N03
[Indexed for MEDLINE]
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