Here is an advanced prosthetic arm that can be controlled by thought. Johnny Matheny is the first person to get a mind-controlled prosthetic limb attached directly to his skeleton. The Modular Prosthetic Limb, developed by the Johns Hopkins Applied Physics Laboratory, has provided Johnny with almost complete range of motion.
The researchers will make these arms look and feel more natural in the future. For now, this technology can be a lifesaver for many people.