Electrical Potential of the Human Epidermis

Abstract

Electrical potentials exist on the human epidermis. They respond to internal and external stimuli by transient variations in their D.C. levels. The speed, amplitude and shape of the response depend on the individual as well as the type of stimulus applied. In general, there are two types of responses: one is localized and the other is generalized. The localized response is detectable mainly in the area where the stimulus is applied. The generalized response is detectable from more than one locations. The existence of generalized responses suggests involvement of the nervous system.