An apparatus which diagnoses the functional condition of every internal organ and the balance condition of the autonomic nervous system in a living body has a reference electrode firmly attached to a part of the living body, a plurality of differential electrodes firmly attached to each of specific minute...http://www.google.com/patents/US3971366?utm_source=gb-gplus-sharePatent US3971366 - Apparatus and method for measuring the condition of the meridians and the corresponding internal organs of the living body
