 It's to the best of our knowledge. I'm Ann Strainchamps. Psychedelics may be the next big therapeutic treatment for middle illness. They're also a window into understanding the mind. And for some scientists, that gets personal. It's a magical experience. The world just looks fundamentally different. There's still a tree there, but everything is so much suffused with a sense of connectedness, with a sense of beauty. You can hear sort of the heartbeat of the universe. You can actually hear it. You can actually listen to it. It's right there. Boom, boom, boom, boom. It's the most amazing thing ever, and the world is just transformed. It's one of the most meaningful experiences I've ever had in my life. Magic mushrooms, mysticism and tripping inside a brain scanner. This hour, the neuroscience of psychedelics.