Stuart Ray Sarbacker is an associate professor of comparative religion and Indian philosophy at Oregon State University in Corvallis, Oregon. His academic work is centered upon the theory and practice of yoga in the traditions of Hinduism, Buddhism, and Jainism, and in its contemporary nonsectarian manifestations. He is the author of "Samadhi: The Numinous and Cessative in Indo-Tibetan Yoga "and of numerous scholarly articles on yoga. He has trained extensively in contemporary yoga and meditation traditions in India and the United States.