1. A method for treating a patient suffering from a medical ailment using at least one electrode adjacent an efferent neural structure and at least another electrode adjacent an afferent neural structure, the method comprising: applying electrical stimulation energy by the at least one electrode to the efferent neural structure, thereby increasing the activation threshold of the efferent neural structure relative the afferent neural structure; and applying electrical stimulation energy by the at least other electrode to the afferent neural structure while the activation threshold of the efferent neural structure is increased, thereby modulating activity of the afferent neural structure to treat the medical ailment, wherein the increasing of the activation threshold of the efferent neural structure minimizes any stimulation of the efferent neural structure inadvertently caused by the electrical stimulation energy applied by the at least one other electrode to the efferent neural structure.