I would suppose it would depend what they are dying of. My dad died of cancer and although he didn't open his eyes or eat/drink he could hear me as he'd squeeze my hand when I spoke.
sqad
so said the nurse, who i trusted implicitly. she was the only one with an ounce of sense out of the useless bleeding doctor and his nursing staff.
//Well I don't know in general terms but I'm hoping that it's my sense of humour that hangs around longest. // & me 92 & still waiting. I understand however that there are people dying now who have never died before.