![Stanislav Grof](https://wpr-public.s3.amazonaws.com/ttbook/styles/story_full_image/s3/images/Stanislav_Grof_by_Anton_Nossik_crop.jpeg?itok=ixOMQc1U)
Stanislav Grof. Anton Nosik (CC BY 3.0)
Long before Timothy Leary's study of LSD, Czech psychiatrist Stanislav Grof launched his own investigation of psychedelics. Since then he's devoted his life to exploring non-ordinary states of consciousness. He tells Steve Paulson that his work on psychedelics made him question the standard scientific account of consciousness.