The influence of the amplitude of driving signal in measurement of the active points on human skin

Our contribution deals with the human skin voltage chart measurement. The human skin has a certain impedance or resistance - it can be easily described and simulated using a substitute electric circuit. But the skin also contains parts with measurably lower impedance and different electric properties - we can show them clearly by measurement of voltage chart. We measured active points on certain part of the skin's surface. The parameters of the measured voltage chart are influenced by the amplitude, frequency and the shape of the driving electric signal. We focused our research effort in this paper to measure the amplitude of the driving electric signal influence.