ABSTRACT
After being sorely neglected for some time, consciousness is well and truly back on the philosophical and scientific agenda. Discussions of consciousness are plagued by disputes about how best to home in on the phenomenon in question. This conception of creature consciousness allows that a creature could be conscious without being awake, for dream states qualify as states of consciousness. According to many the deepest problems of consciousness concern its supposed subjectivity. Most theorists regard consciousness as correlative with subjectivity in this minimal sense: to be conscious is to be a subject of experience, which in turn involves having a perspective on the world. The criteria for the ascription of consciousness discussed thus far have been exclusively functional, but one might have reservations about purely functionalist approaches to the ascription of consciousness. Both the two-streams and partial-unity models entail that split-brain patients lack a unified consciousness.
