Most of my cognitive issues were from being kept in the coma for almost 5 days. It takes a while to run that crap out of your system. The longer you're on it, I imagine makes for a longer recovery. I did not dream while I was out, no recall of anything. When I was brought out of the coma, it felt like I was floating in some large body of water with little waves lapping around me. The water was warm, like I was in a big lake.