The New Retrospective Causal Model

In the old model, dopamine is released when an animal gets a food reward. But in this new model, dog essentially looks back and reflects and its brain tags the sound with dopamine as a cause of the food reward. John Defterios: This matters a lot to neuroscientists who spend their careers thinking about this. It still hasn't quite settled, I would say, in the world of neuroscience. He says researchers are already exploring it.