When my son was in a coma I was told that he didnt feel or hear. Well he did. I asked him to wiggle his toe if he heard me. After some time he did respond by wiggling his toe on demand. NOBODY has proof of who feels what or hears. You may not recall the time you were in a coma. In fact my son doesnt remember much of anything from those months. Didn't mean that at the time he wasnt aware.I was in a coma for 8 days. They got no reaction to stimulus until that 8th day even though they stopped the ketamine a day before. It wasn't until I was already waking up that some moron did a sternum rub; evidently my response was not at all kind. But while comatose, I didn't feel a bloody thing. The neural system may register stimulus, but you can't feel pain without consciousness.
He was parallyzed at one point. Dr tried to see if he felt pain. He didnt respond by moving his arm or leg when pricked with a needle but his eyes frowned as if he did feel.