模拟水合作用对皮肤导电性的影响。

Modelling the effect of hydration on skin conductivity.

作者信息

Davies L, Chappell P, Melvin T

机构信息

Institute of Complex Systems and Simulation, University of Southampton, Southampton, UK.

Electronics and Computer Science, University of Southampton, Southampton, UK.

出版信息

Skin Res Technol. 2017 Aug;23(3):363-368. doi: 10.1111/srt.12344. Epub 2016 Nov 22.

DOI:10.1111/srt.12344

PMID:27873364

Abstract

BACKGROUND

Electrical signals are recorded from and sent into the body via the skin in a number of applications. In practice, skin is often hydrated with liquids having different conductivities so a model was produced in order to determine the relationship between skin impedance and conductivity.

METHODS

A model representing the skin was subjected to a variety of electrical signals. The parts of the model representing the stratum corneum were given different conductivities to represent different levels of hydration.

RESULTS

The overall impedance and conductivity of the cells did not vary at frequencies below 40 kHz. Above 40 kHz, levels of increased conductivity caused the overall impedance to decrease.

CONCLUSION

The variation in impedance with conductivity between 5 and 50 mSm can be modelled quadratically while variation in impedance with conductivity between 5 and 5000 mSm can be modelled with a double exponential decay.

摘要