Abstract

On the one hand, consciousness seems to be utterly the wrong sort of phenomenon to capture in a scientific theory. On the other hand, theorizing about consciousness does not seem to be beyond the pale of science. This dissertation tries to resolve this dilemma of consciousness for the cognitive sciences by answering the three following questions: What are the appropriate properties of the mind and the brain to study in order to develop a theory of consciousness? What informational role does consciousness play in our psychological life? How does the underlying neurophysiological structure of consciousness relate to higher-level information processing descriptions of consciousness? In discussing these issues, I defend the viability of the project against popular philosophical objections and then develop my own framework for approaching the scientific study of consciousness based on work in neurophysiology, developmental psychology, neurology, cognitive neuropsychology, and cognitive psychology. In particular, this dissertation argues that consciousness is actually a structural property of the brain relative to higher level information processing. ;I argue that qualitative states are aligned with a single and distinct memory system. Understanding how that system works, and how it differs from other systems, should allow us to "decompose" consciousness in a naturalistic framework. Though the operations of our different memory systems are not completely understood, it is clear that our "semantic" memory system can be identified with conscious experience. The study of semantic memory across the various investigative domains within the cognitive sciences bounds the phenomena of consciousness such as to make it amenable to scientific scrutiny. This then gives us a solid interdisciplinary framework in which to begin a thorough study of qualitative experience