A cardiac stimulation device has a plurality of electrodes that deliver therapeutic electrical stimulation to the heart. At least one electrode is designated a cathode that cathodically induces depolarization of the surrounding heart tissue. At least one electrode is designated an anode. The device is...http://www.google.es/patents/US8126546?utm_source=gb-gplus-sharePatente US8126546 - Anodal excitation of tissue
