Dairy cow and human sensitivity to short duration 60 Hertz currents.

The effect of length of duration of 60 Hz, sinusoidal electric current (1, 10, and 100 cycles) on the current magnitude to which lactating dairy cows responded was studied and the residual effect of previous shock was evaluated. Significantly higher currents were required for the 1 cycle current duration than for 10 and 100 cycle durations. Results of a study to determine human response to currents of similar durations are also reported.