Ever since its discovery nearly thirty years ago, the phenomenon of blindsight—vision without visual consciousness—has been the source of great controversy in the philosophy of mind, psychology, and the neurosciences. Despite the fact that blindsight is widely acknowledged to be a critical test-case for theories of mind, Blindsight and the Nature of Consciousness is the first extended treatment of the phenomenon from a philosophical perspective. Holt argues, against much received wisdom, for a thorough-going materialism—the view not only that mental states are brain states, but (much more controversially) that mental properties are physical as well. Designed not only for philosophers and scientists, Blindsight and the Nature of Consciousness has something to say to anyone interested in the mystery of the human mind and in how philosophers and scientists are working toward solving that mystery.