About this trial

This trial is enrolling individuals with chronic spinal cord injuries at the cervical or thoracic level to test the effect of skin-surface (transcutaneous) electrical spinal cord stimulation (SCS) on arm and leg function. Transcutaneous SCS is a non-invasive technique for stimulating the spinal cord via surface electrodes to modify spinal cord function. If included, participants will undergo two phases of stimulation, both done while performing functional task exercises: 15 sessions of open-loop SCS (fixed stimulation parameters) and 15 sessions of closed-loop SCS (stimulation parameters continuously revised in real-time based upon exact movements of participant as captured by wearable sensors). These stimulation sessions will be combined with exercise therapy for upper and/or lower extremity function. Final testing of arm and leg function will be performed after 3 months.