Does a person in coma hear?
People in coma sometimes show signs that they are able to hear and understand. Often these signs are just simple reflexes — like squeezing a hand, or sucking, in response to a touch. Occasionally people in coma seem to become calm when they hear a familiar voice. Since they almost never remember these events, it is impossible to decide if they actually recognized a voice or understood what was said. However, as a rule, it is good to talk to people in coma as though they could hear and understand what was being said.
