An excellent video of Dr. John Mack talking about his research with experiencers.
I have been working on a book project over the last year and a half. Much of what Mack is saying here fits with what I've been digging into for my own research. In the beginning of this video Dr. Mack talks about Stanaslov Groff, spiritual emergency as well as a past life memory. I have been writing exactly about these topics and issues, and wrestling with the challenges that arise.