It sounds crazy, but Canavero believes that a full head transplant could be possible within just a few years. Even crazier? He’s already figured out how to do it. In 2008, he used electrical stimulation to wake up a patient who had been in a coma for two years. He bases his own theories on those of Robert White, a neurosurgeon who transplanted a monkey’s head in the 1970’s. The procedure would begin with two bodies: the donor, and the recipient. Both bodies would be chilled to a certain temperature. Two surgeons would cut their spinal cords at the same time. The donated head would be immediately put on the recipient’s body and, using fusogens, be attached to the recipient’s spinal cord.