  In the 1980s and 90s there was a major resurgence of scientific and philosophical research into the nature and basis of consciousness (Baars 1988, Dennett 1991, Penrose 1989, 1994, Crick 1994, Lycan 1987, 1996, Chalmers 1996). Once consciousness was back under discussion, there was a rapid proliferation of research with a flood of books and articles, as well as the introduction of specialty journals (The Journal of Consciousness Studies, Consciousness and Cognition, Psyche), professional societies (Association for the Scientific Study of Consciousness—ASSC) and annual conferences devoted exclusively to its investigation (“The Science of Consciousness”).