Have you ever looked into the 'phantom life' phenomena?

It's when someone is knocked unconscious, sometimes only for a few minutes, but they experience another life in their dream. One guy remembers his accident, going to the hospital, being sent home, going through life normally (school, then college, then employment), he met a girl, and they ended up getting married and had two children, he watched them grow up, and after celebrating his eighth wedding anniversary, he woke up, he'd only been unconscious for several minutes! He needed to see a therapist afterwards, as his recollection of the phantom life was so vivid.