Not a professional but my my dad was in the hospital because of a severe foot infection (he's a diabetic so he was in intensive care) and he has bad insomnia. Anyways he told me how he was up all night talking to the man next to him about life, family and how they hate being in the hospital. The next morning finally came and he asked the nurse about the guy next to him, he wanted to give him his pudding cuz he doesn't like it. The nurse looked at him weird and said he had died last night and that he couldn't have been talking to him. But he had told my dad his name and sure enough it was him... He believes he was talking to his spirit before he finally left this realm.