Quite remarkable. However, the question has to be asked, is this a preprogrammed response or a genuine sign of consciousness? I can respond and communicate flu

Quite remarkable. However, the question has to be asked, is this a preprogrammed response or a genuine sign of consciousness? I can respond and communicate fluently in my sleep, however I never wake up from my sleeping communication. Why are these signs not seen in people who are in vegetative states but received no damage to the language centres of their brains?