Gül Dölen is a pioneering neuroscientist in the emerging field of psychedelics. She’s studied how psychedelics may assist in treating trauma, addiction, depression, and even Parkinson’s. A key piece of her research has involved critical periods–when the brain is capable of rapid and deep learning. Psychedelics may be a master key for unlocking these critical periods and curing diseases of the brain. Dölen speaks with Krista Tippett, host of the “On Being” podcast, about what she’s learning about the brain and its capacity to heal. Dölen is a professor at UC Berkeley where she teaches both psychology and neuroscience.