The present invention relates to an implantable stimulator device, the device being adapted to adjust electrodes thereof by receiving a command to move an amount of current from a first initial pulse of an initial duration on a first electrode to a second initial pulse on a second electrode； reconstructing the first and second pulses into corresponding first and second fractionalized pulses, wherein each fractionalized pulse is comprised of pulse portions； and respectively applying the first and second fractionalized pulses to the first and second electrodes on the implantable stimulator device during a final duration, wherein the pulse portions of first fractionalized pulse are not simultaneously applied with the pulse portions of the second fractionalized pulses during the final duration.
