Researchers from École Polytechnique Fédérale de Lausanne (EPFL) in Switzerland have been able to make a paralyzed man walk again on his own. The groundbreaking work shown in a video news release took more than a decade of science, surgery, a strong Bluetooth connection and the patient's own thoughts. In the findings published in Nature, neuroscientists explained how when we move, our brains send signals to the nerves and muscles in our bodies.