This neurological, "reverse-engineering" analysis of the spatial and temporal characteristics of meditation-induced light visions observed by the author and described in ancient Indian, Tibetan, and Chinese texts is an indispensable reference for neuroscientific researchers, physicians, psychotherapists, anthropologists, scholars of religion, and intellectually curious meditators. The analysis shows how sleep rhythms generate meditative states and how destabilization of sleep rhythms triggers hypersynchronous activity in corticothalamic circuits that drives the emergence of hippocampal...