Human Sensitivity to Electric Shock Induced by Power-Frequency Electric Fields

This article discusses the sensory effects of electric shock produced by contact with objects in power-frequency electric fields. Data are presented from a variety of experiments in which human subjects were exposed to capacitive discharges, and other stimuli related to 60-Hz ac electric field induction. Thresholds of perception are quantified, as well as suprathreshold reaction levels, up to tolerance limits. Several variables are considered, including capacitance, electrode size, mode and locus of contact on the body, electrode polarity, skin temperature, effects of mechanical force in touching an electrode, and differences in sensitivity among individuals. Sensitivity factors are related to basic neuroelectric functions. Considerations for the extrapolation of the present data to other than 60-Hz electric field environments are discussed.