The signals from the electrodes reach a junction box from where it reaches recorder which also displays multiple simultaneous channels on a screen. The signals can be electronically archived on a hard disc or printed on a calibrated recording paper. By analyzing the sequence in which signals arrive at each electrode, the pattern in which the signals are conducted within the heart can be assessed. This gives valuable information on the origin of the heart rhythm disorder. The information gathered will guide further treatment in the form of medications or catheter ablation. Catheter ablation is the procedure by which a small electrode delivers an energy to produce localized damage a disease focus, curing the rhythm abnormality. Most commonly used source of energy is radiofrequency, while cooling with a cryo probe and microwave energy are other options.