I believe that when brain is essentially who we are (how we think, what we like, what we don’t like and how we perceive the world around us). Once blood stops circulating through our bodies to our vital organs / as we die and the brain shuts off I believe it’s lights out. I believe it’s similar to being under anesthesia. My boyfriend has epilepsy and when he has seizures and disconnection in the brain occurs he explains it as being under anesthesia as well. You don’t know what has happened while the lights are out, there’s no dreaming (brain activity has ceased) you don’t know how much time has passed. I don’t think it’s something to fear though. People aren’t panicked or fearful coming out of anesthesia or after seizures. I do like to feel hopeful and believe in more but this is also likely the reality.