cardona. >> car ddona's maps look like a jackson pollack painting. >> every time a little black line that you are seeing here is a membrane of a little piece of the neurron. >> but to his trained eyes, this wiring diagram helps to explain how we do what we do. >> and so this is a mesh that is the contour of the entire central nervous system. >> it is a symbiotic relationship. cardona's maps then help la teach predict and examine pathway pathways. >> piece by piece, we are putting together a comprehensive picture of how a brain works as a whole which is something that has never been possible before. >> the current research is focusing on the dopamine neurron s which are involved in learning. >> we are manipulating certain circuit elements but at the same time recording the output in this case the firing of the