Trial And Error:
Any way I can explore these more?
Certainly, it's called astral projection and there's tons of stuff about it on the internet.
Check out the book Astral Dynamics, and check out the forum here:
http://www.astraldynamics.com.au/forum.php
There's also a big online community called the Astral Pulse:
http://www.astralpulse.com/forums/
Be sure to check out Robert Monroe's three books, especially Journeys Out of the Body, his stuff is great. I think you can download pdfs for free but I don't remember where to find them off the top of my head.
Also read the section about the Powers in MCTB.
Could you elaborate on what exactly you mean by it? The sensations are very tingly. Tingling has a quality of as if made of tiny particles that are bubbling (or ants crawling), and I think it is high frequency. Maybe it could be said that the sensation is made up of very small sensations that arise and pass away quickly. But not in a way that is greatly different from any other tingling any one else can feel. Other than that there is no specific experience of reality arising and passing very quickly.
I won't be able to give you a clear answer because I've only A&Ped once, and am currently bouncing around pre-path. But the easiest way I can describe it, is that reality seems to be shimmering, and this shimmering is composed of little particles arising and vanishing very very very quickly.
If this is A&P, just bring mindfulness to the fore and note what is happening, and the process will unfold from there