RecruitingDevice studyNeurostimulation for Respiratory Function After Spinal Cord InjuryThe purpose of this research study is to learn more about the connections between the brain, nerves, and diaphragm after experiencing a cervical spinal cord injury (SCI).The main question it aims to answer is: Changes in respiratory function and recovery using stimulation and respiratory exercise training in spinal cord-injured individuals. Participants will complete a maximum of 55 study visits. They will be asked to complete about 40 treatment sessions which include multiple stimulation sessions over the scalp and neck, followed by about 60 minutes of respiratory training. Assessment sessions will be completed prior at baseline, after 20 sessions and after 40 sessions of study treatment.