Abstract: The current invention concerns a method of ablation designed for the treatment of sick sinus syndrome and other medical conditions characterized by abnormal sinus bradycardia. The method includes the steps of inserting an ablation catheter into a heart of a living subject and directing energy from the ablation catheter towards tissue at a targeted location for ablation. In the method, a specific limited location at level of the junction between the right atrium and the superior vena cava is targeted.