Vagus nerve stimulation (VNS) may play a beneficial role in the motor recovery of stroke patients, new clinical trials at The Ohio State University Wexner Medical Center have revealed. As part of the therapy, stroke rehab specialists surgically implant the MicroTransponder Vivistim -- an electrical device that stimulates the vagus nerve -- into the patient's chest wall. It works via a wireless transmitter, which picks up signals, redirects them to the vagus nerve (located in the neck) and stimulates the brain whenever a therapist pushes a button.