What are the chances of a person recovering from a 5 year coma or vegetative state due to a stimulus?
For context: the patient suffers head trauma, with the doctor noting that only the parts necessary for survival were fine. For 5 years, the patient remains in the same state, non-responsive, eyes closed. After 5 years the patient wakes up due to an external stimulus. How realistic is that, and in what state would the patient be?
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