I believe this to be a human trait, some have it more highly refined then others.This is what I believe as well,
The closest thing to "psychic" ability that I do believe in is a person who is an Empath... and I don't attribute this to any supernatural abilities but the ability for one to sense the feelings of others based on body language, vocal inflections and other subtle forms of communication
However I don't know what to believe when it comes to people who know from miles away that a relative died, or meet someone and immediately know personal details about them.
As far as the heart being a center for this? I don't think so. I do believe in cellular memory, just not that the heart is anymore specialized in all of this then the rest of the body.
Dams