Physiological effect of the electricity

Impedance between two electrodes in contact with two parts of the human body, after removing the skin from under the electrodes.

Impedance between an electrode on the skin and the conductive tissues underneath.

Vectorial sum of the internal impedance and the impedances of the skin.

Resistance limiting the peak value of the current at the moment when the touch voltage occurs.

The minimum value of current which causes any sensation for the person through which it is flowing.

The maximum value of current at which a person holding electrodes can let go of the electrodes.

The minimum value of current which causes ventricular fibrillation.

The heart current factor relates the electric field strength in the heart for a given current path to the electric field strength in the heart for a current of equal magnitude flowing from left hand to feet. Note. - In the heart, the current density is proportional to the electric field strength.