Fig. 1From: Electrocardiogram: his bundle potentials can be recorded noninvasively beat by beat on surface electrocardiogramThe “new electrocardiogram” and “conventional electrocardiogram” are recorded simultaneously. The upper lead is “new electrocardiogram” and the lower is “conventional electrocardiogram” in lead V5. New wavelets are clearly recorded before P wave (a), before QRS complex (b) and after QRS complex (c)Back to article page