'Vegetative state' man responds to questions

The finding by British and Belgian researchers has huge implications for the care and treatment of patients in a coma-like state. It comes two months after a Belgian car crash victim whose condition was misdiagnosed as a vegetative state for 23 years was revealed to have been conscious the whole time. Using a scanning technique called functional magnetic resonance imaging, the patient's brain activity was mapped while he was asked to answer "yes" or "no" to questions such as "Is your father's name Thomas?" The patient communicated answers by wilfully changing his brain activity. CNN