Matthew Nagle, a paralyzed man, received a tiny brain implant that allows him to control a computer, TV, and a robot arm. After only 4 days of practice, he was able to change the channel and volume on a TV, move a robot arm, and control a prosthetic hand. Matthew claimed the implant, performed at New England Sinai Hospital and Rehabilitation Center in Stoughton, Mass, didn't hurt. An external cable connects the 4x4mm sensor and its 100 electrodes to a nearby computer for processing. John P. Donoghue, professor of neuroscience at Brown University published his findings in the current issue of Nature.

The question is, will some desire this technology as a convenience?