(BookSurge) Nicholson explores the neurological basis of meditation-induced light visions, phenomena that he himself has observed and that have been described in ancient Indian, Tibetan, and Chinese texts. In a neurological “reverse-engineering” analysis of the spatial and temporal characteristics of these visions, he shows how sleep rhythms generate meditative states. He argues that destabilization of those rhythms causes hypersynchronous activity in corticothalamic circuits, driving the emergence of hippocampal seizures with ecstatic attributes. Nicholson is co-author of the psychology textbook Your Self: An Introduction to Psychology , among a wide range of other publications. He has written numerous articles on the neural correlates of meditation and meditation-induced light visions.