Final answer:
The Ventricular pacing signal is seen as a QRS complex on an ECG, which represents the depolarization of the ventricles followed by their contraction.
Step-by-step explanation:
The Ventricular pacing signal is seen as a QRS complex on an electrocardiogram (ECG). During a cardiac cycle, the QRS complex represents the depolarization of the ventricles and is followed by ventricular contraction. Ventricular pacing occurs when an electrical impulse is artificially generated to initiate ventricular depolarization, which is necessary when the heart's natural pacemaker is not functioning correctly. On an ECG, the QRS complex will typically appear as a sharp spike, which is different from the smaller waves associated with atrial activity such as the P wave representing atrial depolarization.