Mind-Controlled Musical Instrument Helps Paralysis Patients Rehabilitate

"Paralysis patients could play music with their minds, using a new brain-control interface that senses brain impulses and translates them into musical notes.
Users must teach themselves how to associate brain signals with specific tasks, causing neuronal activity that the brain scanners can pick up. Then they can make music.
It’s a pretty unique use of brain-computer interfaces, which are already being used to do things like drive cars, control robots and play video games."

Link to full article: http://www.popsci.com/technology/article/2011-03/medicine-mind-using-eeg-patients-can-play-music-merely-thinking