Im Chang-Hwan, Jung Hui-Hun, Choi Jung-Do, Lee Soo Yeol, Jung Ki-Young
Department of Biomedical Engineering, Yonsei University, Wonju 220-710, Korea.
Phys Med Biol. 2008 Jun 7;53(11):N219-25. doi: 10.1088/0031-9155/53/11/N03. Epub 2008 May 19.
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.
本研究介绍了一种确定经颅直流电刺激（tDCS）中最佳电极位置的新方法。使用针对直流传导问题制定的三维有限元方法（FEM）分析电场和三维传导电流密度。通过将笛卡尔坐标系转换为球坐标系并应用（2+6）进化策略（ES）算法，优化了最小电流注入的电极位置。应用于标准三层头部模型的初步模拟研究表明，该方法在提高tDCS性能方面具有前景。
