1. A method of treating spasmodic dysphonia in a subject, comprising: providing a system comprising a stimulating electrode operably connected with a processor configured to set one or more stimulation parameters for an electrical impulse deliverable by said electrode; placing said electrode in electrical contact with the superior laryngeal nerve; using the processor to set the stimulation parameters such that the electrical impulse causes a level of stimulation that does not exceed the excitability threshold of one or more alpha motor neurons located within the thyroarytenoid muscle; and delivering the electrical impulse to the superior laryngeal nerve; wherein the electrical impulse decreases a level of activity of one or more gamma motor neurons.