“What would you see if you could look inside a hallucinating brain?
“Despite decades of scientific investigation, we still lack a clear understanding of how hallucinogenic drugs such as LSD (lysergic acid diethylamide), mescaline, and psilocybin (the main active ingredient in magic mushrooms) work in the brain.
“Modern science has demonstrated that hallucinogens activate receptors for serotonin, one of the brain’s key chemical messengers.
“Specifically, of the 15 different serotonin receptors, the 2A subtype (5-HT2A), seems to be the one that produces profound alterations of thought and perception.”
Read more at Scientific American