Guest: Gerald Edelman.

Scientists and philosophers across the ages have speculated on the nature of consciousness. Even today, with our knowledge of brain function, we still wonder how the activity seen in the brain results in our subjective thoughts and emotions. One of America's leading neuroscientists, Gerald Edelman, has spent his career trying to understand the origins of consciousness. He joins us today on Focus 580 to explain what recent advances in biochemistry and evolutionary biology can tell us about the connections between mind and body.