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Effect of triangular electrode schemes on Broca’s cortical stimulation: conventional and HD-tDCS study
Medical & Biological Engineering & Computing ( IF 2.6 ) Pub Date : 2021-03-30 , DOI: 10.1007/s11517-021-02338-6
Ali Amani 1 , Maryam Yousefian 1 , Hadi Seyedarabi 1 , Mehdi Farhoudi 2
Affiliation  

Transcranial direct current stimulation (tDCS) is a therapeutic and complementary treatment in several cognitive diseases, psychiatric disorders, and disabilities that occur due to an accident or stroke. In the current research, we aimed to boost some parts of the stimulation structure and proposed a new electrode scheme in the mentioned approach. After segmenting magnetic resonance imaging (MRI) scans and using a tissue correction routine algorithm, we attempted to create an appropriate head model and electrode placement according to electric stimulation, whereby we completed tDCS processing. The considered electrodes are divided into two general categories. All the considered electrodes consist of rectangular, circular, triangular, and empty triangular patches with specific dimensions. We investigated common electrode schemes and introduced better electrode schemes for more effective cortical stimulation. We observed that the triangular electrodes in the conventional and anodal arrangement in the triangular 4 × 1 HD-tDCS create more electric field than others. Also, we calculated the current density and attempted to substantially improve it. Therefore, we recommended the empty triangular schemes. We investigated the designed model thoroughly and observed that it increased the current density not only in the conventional but also in the HD-tDCS.



中文翻译:

三角形电极方案对 Broca 皮层刺激的影响:常规和 HD-tDCS 研究

经颅直流电刺激 (tDCS) 是一种治疗性和补充性治疗方法,可用于治疗因事故或中风导致的多种认知疾病、精神障碍和残疾。在目前的研究中,我们旨在增强刺激结构的某些部分,并在上述方法中提出了一种新的电极方案。在分割磁共振成像 (MRI) 扫描并使用组织校正常规算法后,我们尝试根据电刺激创建合适的头部模型和电极放置,从而完成 tDCS 处理。考虑的电极分为两大类。所有考虑的电极都由具有特定尺寸的矩形、圆形、三角形和空三角形贴片组成。我们研究了常见的电极方案并引入了更好的电极方案以实现更有效的皮层刺激。我们观察到三角形 4 × 1 HD-tDCS 中常规和阳极排列的三角形电极比其他电极产生更多的电场。此外,我们计算了电流密度并试图大幅改进它。因此,我们推荐空三角方案。我们彻底研究了设计的模型,并观察到它不仅增加了传统的电流密度,而且增加了 HD-tDCS 的电流密度。我们计算了电流密度并试图大幅改进它。因此,我们推荐空三角方案。我们彻底研究了设计的模型,并观察到它不仅增加了传统的电流密度,而且增加了 HD-tDCS 的电流密度。我们计算了电流密度并试图大幅改进它。因此,我们推荐空三角方案。我们彻底研究了设计的模型,并观察到它不仅增加了传统的电流密度,而且增加了 HD-tDCS 的电流密度。

更新日期:2021-03-30
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