Lol I just came here to post that ^ (from different source)
Anyways, that's horrifying that they're conscious during their vegetative state. But brain imagining is amazing at bringing communication to a new level. I guess this will help diagnosis.
Another random source:
http://www.vancouversun.com/news/Veg...396/story.html
Quite interesting how he communicates with associating yes/no with mental imagery