Doctors now have a better understanding of what happens when you die – and many believe your brain may stay alive long enough after your death to actually realize that you're dead.
It seems that after the heart stops beating, it takes up to 20 seconds before brain waves totally go away. That means, for 20 seconds, you're just hanging in there, a prisoner in your own, lifeless body, listening to conversations by doctors and loved ones, declaring that you’re dead. Freaky. (New York Post)