By any chance was it The Holographic Universe by Michael Talbot? That book was hugely influential on my thinking on subjects like this, but it always seemed like a rather obscure book and theory in terms of how much it reached the world, so it would be quite cool if you had come across it too! Small world and all.

But yeah absolutely, the theory of the holographic universe is an excellent candidate to explain much of these “non-physical” phenomena we nonetheless observe the physical effects of, glad you brought it up