If you are looking for information about brain-computer interfaces, follow the link to my post about Emotive Systems neural interface on the Technology-Supported Human-World Interaction blog. It looks like it holds promise for cognitive rehabilitation applications and games.

Emotiv System's Neural Game Controller Headset: Human-Computer Interface of the Future?



Also see:
Game Interaction via Thoughts and Facial Expressions: EPOC - Emotiv Systems Neural Interface