This is a great development. Both the patient and the family have to be thrilled.
They devised a technique to enable the man, now 29, to answer yes and no to simple questions through the use of a hi-tech scanner, monitoring his brain activity.
To answer yes, he was told to think of playing tennis, a motor activity. To answer no, he was told to think of wandering from room to room in his home, visualising everything he would expect to see there, creating activity in the part of the brain governing spatial awareness.
His doctors were amazed when the patient gave the correct answers to a series of questions about his family. The experiment will fuel the controversy of when a patient should have life support removed.
