The functional contributions of consciousness.

Abstract

The most widely endorsed philosophical and scientific theories of consciousness assume that it contributes a single functional capacity to an organism's information processing toolkit. However, conscious processes are a heterogeneous class of psychological phenomena supported by a variety of neurobiological mechanisms. This suggests a plurality of functional contributions of consciousness (FCCs), in the sense that conscious experience facilitates different functional capacities in different psychological domains. In this paper, I first develop a general methodological framework for isolating the psychological functions that are associated with conscious experience. I then use this to show that the leading accounts-Global Workspace Theories, Higher Order Thought Theory and Information Integration Theory-all fail to acknowledge this functional pluralism, which limits their applicability as theories of consciousness.