The Brain Science Perspective of Consciousness and the Qualia Problem

With the progress of brain science,the consciousness problem which was a old philosophical problem becomes a new science problem. There are four major kinds of theories about consciousess that are hotly debated. They are Eccles' s interactive dualism,Crick's reductive materialism,Sperry's emergent interaction and Edelman's identity. The qualia problem as the subproblem of consicousness are debated in the last three theories which provide a more and more clear explanation of qualia.