1 Involution (pratiprasava) and Emergence (vyutthāna): Yoga Philosophy and the “Decoding” of Psychedelic Science, Culture, and Experience Stuart Ray Sarbacker, Oregon State University ABSTRACT Transnational yoga traditions are playing an important role in the culture of the 21 st century “Psychedelic Renaissance.” The bodily disciplines and contemplative practices associated with yoga have long been in the orbit of psychedelic science and culture—as a precursor to, a skill set within, and as an integrative method following psychedelic journeys and lifestyles. I argue that the “classical” framework for understanding power in yoga and in āyurveda with respect to the use of bioactive, if not psychoactive, herbs (oṣadhi) offers acute insights into contemporary psychedelic science and culture. These include 1) that yoga, historically, incorporated various endogenous and exogenous methods, paralleling the hybridity of modern, transnational yoga; 2) Pātañjala yoga philosophy provides a framework for understanding psychedelic experience that anticipates elements of psychedelic science; and 3) Contemporary descriptions of DMT-based psychedelic experience echo discussions of yogic experience by Larson and Grinshpon, with regard to “fantastic beings” and “near- death-experiences.” 1. Transnational Yoga Traditions and Psychedelic Science and Culture Transnational yoga traditions are playing an increasingly important role in the culture of the 21 st century “Psychedelic Renaissance.” The bodily disciplines and contemplative practices associated with Indian mind-body discipline, or yoga, have long been in the orbit of psychedelic science and culture—as a precursor to, a skill set within, and as an integrative method to be utilized in the wake of psychedelic journeys. The psychedelic counterculture of the 1950s and 1960s, deeply invested in the use of LSD and Psilocybin, was inextricably tied to the rise of influential transnational Hindu and Sikh Yoga and Buddhist traditions. 1 Asian philosophy and spirituality provided orientation towards the extraordinary content of psychedelic experiences, guidelines for navigating the experience itself—see, for example, Leary, Alpert, and Metzner’s