"GO BADGERS" isn't an unusual message to get from the University of Wisconsin at Madison - particularly when it's a status update from Twitter, the texting service that limits users to 140 characters at a time. The unusual thing about this message is how it got to Twitter in the first place:via brain waves. University of Wisconsin doctoral student Adam Wilson's cheer for the hometown team is among the first direct brain-to-Twitter messages ever sent - and it points the way to better communication systems for paralyzed patients who have to cope with the conditions faced by physicist Stephen Hawking and the late Jean-Dominique Bauby, author of "The Diving Bell and the Butterfly."