What I don't like in movies dealing with the illustration of altered states of consciousness is that usually you see the guy from the outside.
You don't meditate to experiment with altered states of consciousness or whatever else. You meditate only to perceive by yourself that everything is within us, every atom of the universe, and that we already possess everything we would wish to find outside of ourselves.
For me, being a writer is not an altered state. It's very ponderous, and very - it's like being a shoemaker.
When I experienced altered states of consciousness, my whole philosophical structure crumbled, and that terrified me. And what scared me the most was the realisation that death was not the end!