Saw the session by this guy at Duke University at Dragoncon 2009... Some of this was WAAAAY over my head. He gave a "refresher" on Neurobiology and then talked about the current research on Brain-Machine interfaces. Some funding by DARPA for prosthetic weaponry for soldiers... and then the stuff about mice and monkeys where they are wiring into their brains to measure and control individual neurons... While the audience was thinking "mind control" it seemed to me that he was more talking about creating a "body control" situation. Puppet-master, anyone? High tech, cool stuff. Visit their website at www.openprosthetics.org.
In the meantime, until they invent a prothetic weapon or a better replacement limb, they are working on using the technology for video gaming. They are working in an Open Source environment, so maybe some of you Junkies can help them out.