Interesting thoughts. Here's my two cents for your group to toss around. What strikes me from my own experience was the overwhelming feeling. It seem SO real - and my personal experience had nothing to do with anything previous in my life. That particular experience wasn't a memory trigger. Well, "in my current life" experience anyway. Conversly, I don't have any preconceived ideas of reincarnation. Don't know, don't care much. Present day existence is enough to handle.
I also wonder:
Being connected to something previous (eons previous) is easily fathomable. What one cellular trigger has traveled to you, and is in you, from a person 100,000 years or more ago?
What was that movie? Altered States? On a side note, LSD has a profound way to allow ones realization of it's exact first begining, (your first cell?) I guess I have to qualify that statement. Yes, been there done that. Grew up in a college town in the late '60's. I feel very lucky to have survived the experience and would never try it again. The experience was as fundamental a realization of "where I came from" as was joining the Army and learning how the basic real world turns. (Politics, big dog gets the porch, etc.)
The first cell. Before it splits. It's a reality.
Impetus of the conscience? Million dollar question I suppose. When does it form?