I searched many papers and found different stimulation parameters and I am confused with terminology, when they say we used trains of so and so parameters Vs pulses of so and so parameters...
Please try to understand that when we say a pulse or a series of electrical pulses, these are usually rectangular in shape. The usual pulse height is the amplitude of the voltage or current and then the value returns to normally zero (in unipolar mode) and may swing to + and - levels around (ZERO) in a bi-polar mode..
On the other hand, a pulse-train is a small group of pulses called the burst and then like you apply the stimulus in the form of a pulse train, you fire (apply) the stimulus in the form of a series of bursts.