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研究和比较了三种无毛实验动物离体皮肤和人体表皮在离子电导中的被动电学性质，发现４８小时水合过程显著和连续地降低动物皮肤的阻抗，而人体表皮则保持阻抗相对稳定。但是在各水合时间，在连续升高的脉冲电压与产生的电流之间无论动物皮肤或人体表皮都呈现类似的非线性关系，只是对电压变化的敏感程度不同，其相关方程为：Ｖ＝（４ＡＲＦ／Ｔ）Ｓｉｎｈ－１（ＢＩ）。式中参数Ａ的大小反映了敏感性的大小。与人体表皮比较，无毛小鼠和无毛豚鼠对电压更为敏感，而无毛大鼠相对不敏感。长时间施加电压得到相同结果，但电阻的显著改变总是发生在电压开始或停止后的短时间内。
The passive electrical properties of ionic skin conductance of isolated skin and human epidermis of three hairless experimental animals were studied and compared. It was found that the 48-hour hydration process significantly and continuously reduced the impedance of the animal skin while the human epidermis kept the impedance relatively stable. However, in each hydration time, regardless of whether animal skin or human epidermis shows a similar non-linear relationship between the continuously increasing pulse voltage and the generated current, only the sensitivity to the voltage change is different, and the correlation equation is: V=( 4ARF/T) Sinh-1 (BI). The size of the parameter A in the formula reflects the sensitivity. Compared with the human epidermis, hairless and hairless guinea pigs are more sensitive to voltage, whereas hairless rats are relatively insensitive. Applying the voltage for a long time gives the same result, but a significant change in resistance always occurs shortly after the voltage starts or stops.