Conductive currents in human body due to contact with energized source

在典型的电流路径场景下，展示了人体内部60赫兹接触电流的分布。计算中枢神经系统组织或心脏的电流密度和电场、心流比和心流因数。对传统的SPFD方法进行了部分修正，提出了新的数值方法。当接触电流为0.5 mA时，模型心脏的平均电场为65~85 mV/m。研究发现，在从一只手到另一只手或另一只脚的三种情况下，有33%~40%的总接触电流流经心脏，这些心电流比远远大于另一研究人员的报道。此外，右手到脚的心脏电流系数与IEC中的几乎相同，但是IEC中手掌路径的两倍。

Distributions of 60Hz contact current inside the anatomically realistic human body were demonstrated under typical scenarios of current paths. Current densities and electric fields in the CNS tissues or the heart, the heart-current ratios, and heart-current factors were calculated. The new numerical method which was partly modified from the conventional SPFD method was proposed. Average values of the electric fields in the heart of the model due to the contact current of 0.5mA were 65~85mV/m for the hand-to-foot/feet current paths. It is found that a part of 33~40 % of the total contact current passes through the heart in three scenarios of one hand to either the other hand or feet, and these heart-current ratios were much larger than the ones reported by another researcher. Furthermore, the heart-current factor is almost the same as the one in IEC for the right-hand-to-feet, but is twice as much as the one in IEC for the hand-to-hand path.