The main objective of this study is to determine the effectiveness of a new treatment regime that uses electrical stimulation for the improvement of hand function in persons with spinal cord injuries (SCI). This treatment has been shown to be useful for stroke patients, and our preliminary work indicates that this may also be the case with SCI patients. Our approach to functional electrical stimulation (FES) represents a departure from the established FES approaches, which involve developing assistive devices for permanent, everyday use. Instead, we use FES as a therapeutic intervention that will help individuals with quadriplegia recover voluntary grasping function. Investigators believe that subjects who undergo FES therapy should be able to grasp objects without stimulation once the treatment program is completed.