Matthew says his brain implant has changed his life but experts disagree about how safe it is. Implanting a chip in someone's brain involves complicated invasive surgery with some risk of infection.
Matthew's BrainGate chip needs a cable to connect it to machines and computers. Now, scientists are developing wireless brain implants to control robotic devices remotely. They hope that wireless implants will be in use by 2008.
Watch this video to see Matthew Nagle controlling a computer cursor and a mechanical hand using only his thoughts. Cyberkinetics Neurotechnology Systems Modem Version
