Is there a theory that explains the essence of consciousness? Or is consciousness itself just an illusion? The "last great mystery of science," consciousness was excluded from serious research for most of the last century, but is now a rapidly expanding area of study for students of psychology, philosophy, and neuroscience. Designed for upper-level undergraduate courses on consciousness, this groundbreaking text is the first volume to bring together all the major theories of consciousness studies--from those rooted in neuroscience to those based on quantum theory or Eastern philosophy. Broadly interdisciplinary, Consciousness: An Introduction is divided into nine sections that examine such topics as how subjective experiences arise from objective brain processes; the basic neuroscience and neuropathology of consciousness; altered states of consciousness; mystical experiences and dreams; and the effects of drugs and meditation. It also discusses the nature of self, the possibility of artificial consciousness in robots, and the question of whether or not animals are conscious. Enhanced by numerous illustrations and profiles of important researchers, the text is also supported by many pedagogical aids including classroom exercises, self-assessment questions, further reading suggestions, and practical exercises that help bring the subject to life.