In order to optimize the capability of transcranial Direct Current Stimulation (tDCS), electrode arrangements and the inward current stimulation are taken into account as two crucial factors. In this contribution, in order to specify the electrode positions, a detailed protocol is investigated, in which regarding the intended targeted regions, the optimal montages with an arbitrary number of electrodes are developed. After designing the positions of all active and returned electrodes, the corresponding inward current density is determined for each electrode. The outcomes of the simulation and the electric field distributions in the hand cortex prove that the proposed protocol is capable of improving the tDCS efficiency substantially in all head layers. Furthermore, in order to compare our approach with the other works found in the literature, a performance evaluation is curried out by calculating the maximum electric field distribution in the targeted region. This study shows that it improves tDCS efficiency virtually 2.5 times in comparison to High Definition (HD) montages in the gray matter and nearly 1.5 times in comparison to the other inner layers. Such an outstanding achievement in the gray matter can be regarded as an interesting standpoint in tDCS-rehabilitation studies.

为了优化经颅直流电刺激（tDCS）的能力，电极布置和内向电流刺激被视为两个关键因素。在这种贡献中，为了指定电极位置，研究了详细的协议，其中针对预期的目标区域，开发了具有任意数量的电极的最佳蒙太奇。在设计了所有活动电极和返回电极的位置之后，为每个电极确定相应的内向电流密度。仿真结果和手部皮质中的电场分布证明，所提出的协议能够在所有头部层中显着提高tDCS效率。此外，为了将我们的方法与文献中的其他作品进行比较，通过计算目标区域中的最大电场分布来进行性能评估。这项研究表明，相比于灰质的高清（HD）蒙太奇，tDCS效率提高了近2.5倍，而与其他内层相比提高了近1.5倍。在tDCS修复研究中，灰质方面的杰出成就可被视为有趣的观点。