The psychology of the religious experience has been well-researched and taped. There are many paths up the mountain-sensory deprivation or sensory overload-emotional response to stimuli or the lack thereof is common. Drugs, of course, from psychoactives to the more mundane depressants. Electropophy can bring it about, as can organic brain damage, lack or excess of oxygen, even sex can trigger it. And what it is, according to the science of man and mue, is a subjective mental state, somewhere to the left of hypnosis. A trick the mind plays on itself. A delusion, void of reality.