Introduction: From High Mass to EcstasyThe Development of Ritual, Shamanism, and Altered States of ConsciousnessTheatre = Song + MimesisThe Neuroscience of Arousal and Reward in the Altered States of Consciousness of Shamanism and TheatreIntroduction: Dreams, Altered States of Consciousness and TheatreThe Basic Neuroscience of ArousalThe Effect of Music on Physiological SystemsThe Effect of Music on Psychological SystemsCognitive Models for Music in TheatreRobert Thayer’s Model of Psychological MoodsBerlyne’s Theory of Arousal in Aesthetics and PsychobiologyConclusion: Experiments in EcstasyTen Questions, Part IThings to Share, Part ITen Questions Part IIThings to Share, Part IINotesBibliography