This string theory PhD doesn't understand the brain whatsoever. Hallucinogens are enzyme inhibitors and thus they turn off neural functions. The true reason you "hallucinate" is because your mind is opened to greater information of our reality. Hallucinations are not "not real". All things that appear in consciousness are real including thoughts. Don't confuse reality with physicality. The self has no physical origin, i.e. the brain does not produce consciousness. If you think that matter becomes self-aware by moving it around in some mysterious way, i must, from nothing comes nothing. Shut your stupid mouth.