Based on this idea, Huxley posited that ordinary consciousness represents only a fraction of what the mind can take in. In order to keep us focused on survival, Huxley claimed, the brain must act as a “reducing valve” on the flood of potentially overwhelming sights, sounds and sensations. What remains, Huxley wrote, is a “measly trickle of the kind of consciousness” necessary to “help us to stay alive.”
A new study by British researchers supports this theory. It shows for the first time how psilocybin — the drug contained in magic mushrooms — affects the connectivity of the brain. Researchers found that the psychedelic chemical, which is known to trigger feelings of oneness with the universe and a trippy hyperconsciousness, does not work by ramping up the brain’s activity as they’d expected. Instead, it reduces it.