My family knows Har-Prakash Khalsa well, and while this work appears to rely heavily on anecdotal descriptions of this condition called 'cessation', his photographic work that he develops in tandem to his meditation practice is pretty impressive. I'm not sure if that ads anything to the discussion, but the pictures are nice to look at.
I do want to add that one of the frustrations that I've had with this type meditation work, specifically the Kundalini meditation practice that is the basis for this study, and that is that there's always a heavily structured pseudo-scientific process instructing a participant in the right ways of meditation.
There will be the different stages of the mind, or the different parts of the brain, all of which is simply taxonomic and not in any way related to anything scientific. So the learning of the 'ancient' or 'revered' system becomes the method to which true meditation can be achieved. Naturally this process, this method is nothing but fiction. Compelling perhaps, but still fiction.
Actually, you need the Laws of Nature's permission. Science is a human attempt to get at them. Showing that you can do something in spite of the current laws of science is how you make them evolve and progress.
There will be the different stages of the mind, or the different parts of the brain, all of which is simply taxonomic and not in any way related to anything scientific. So the learning of the 'ancient' or 'revered' system becomes the method to which true meditation can be achieved. Naturally this process, this method is nothing but fiction. Compelling perhaps, but still fiction.