It has been argued that the worldwide prevalence of certain types of geometric visual patterns found in prehistoric art can be best explained by the common experience of these patterns as geometric hallucinations during altered states of consciousness induced by shamanic ritual practices.  HEY EVERYBODY, DID TUMBLR CHANGE THINGS BACK SO YOU CAN EDIT OTHER PEOPLE’S POSTS AGAIN? JOHN GREEN IS SORTA YESTERDAY, WHO SHOULD WE GO MAKE FUN OF NOW? pivot point from which to investigate the complex relationships between symbolic material culture, first-person experience, and neurobiology. We critique prominent theories of these relationships. Drawing inspiration from neurophenomenology, we sketch the beginnings of an alternative, enactive approach centered on the concepts of sense-making, value, and sensorimotor decoupling.