I've experienced an ego death, nearly impossible to explain it, I still existed but had no access to details on all the things that make up a person's sense of identity, I didn't know my name or what I looked like or how old I was or where I was from, during the experience, my access to my personal memories was temporarily gone, I had no point of reference, nothing to define reality or my life, but I still existed, so it was like what an experience of total memory loss would be like I guess, or how some would imagine the in between stage of reincarnation, having lost all knowledge of a previous life but not yet starting the next life, again very hard to explain or describe, it was a very positive experience though