The teenager, a patient at St. Louis Children’s Hospital, had a grid atop his brain to record brain surface signals, a brain-machine interface technique that uses electrocorticographic (ECoG) activity - data taken invasively right from the brain surface. It is an alternative to a frequently used technique to study humans called electroencephalographic activity (EEG) - data taken non-invasively by electrodes outside the brain on the scalp. Engineers programmed the Atari software to interface with the brain-machine interface system.
So this kid is not only helping us learn how we might deal with epilepsy, but can also play Space Invaders without a controller. That’s just one step closer to the end of computer input devices as we know them. Wouldn’t it be cool if your interaction with the computer wasn’t limited by the speed at which you can communicate with it?