Instrumentation, electrode choice and challenges in human skin memristor measurement.

Recording of the passive electrical properties of human skin is a well-established method in clinical applications and research. By applying a small constant voltage or current to the skin, its conductance can be determined without changing it. If a strong electrical signal is applied, the conductance can change. In fact, such nonlinear effects in skin can be observed and it has been shown that the skin acts like a memristor. These nonlinear properties of human skin are not studied systematically yet and hence represent a new field of research. This paper presents a measurement system that is suitable for doing human skin memristor measurements including hardware, electrode choice and aspects that have to be considered.