" Albany, NY: State University of New York Press, ISBN 0-7914-7024-5* "Self-transcendence enhanced by removal of portions of the parietal-occipital cortex" Article from the Institute for the Biocultural Study of Religion* Peru: Hell and Back National Geographic explores the uses of Ayahuasca in Shamanic healing* Is This Your Brain On God?
" Albany, NY: State University of New York Press, ISBN 0-7914-7024-5==External links==* Stanford Encyclopedia of Philosophy, "Religious Experience"*"Self-transcendence enhanced by removal of portions of the parietal-occipital cortex" Article from the Institute for the Biocultural Study of Religion* Peru: Hell and Back National Geographic explores the uses of Ayahuasca in Shamanic healing* Is This Your Brain On God?