#$%^&*AU2013206487A120140116.pdf#####ABSTRACT An apparatus includes an intra-body probe and a processor. The intra-body probe includes an electrode, which is configured to contact tissue in a heart. The processor is configured to receive an electrical signal from the electrode, to distinguish a local component, due to the tissue with which the electrode is in contact, in the electrical signal from a remote-field contribution to the signal, and to control a therapeutic procedure applied to the tissue responsively to the distinguished local component.3/3 200 -RECEIVE FIRST ECG SIGNAL FROM 200ECG CATHETER ELECTRODE 210 APPLY ABLATION RECEIVE SUBSEQUENT ECG SIGNAL 220 FROM ECG CATHETER ELECTRODE IDENTIFY CHANGES BETWEEN THE 230- SUBSEQUENT AND PREVIOUS ECG SIGNALS IN RESPONSE TO ABLATION 240 DID ECG YES SIGNAL CHANGE? NO 250f TERMINATE ABLATION PROCEDURE FIG. 3
