In animals, dopamine is believed to reinforce behaviors by strengthening synaptic links in the prefrontal cortex. But the consistency of the neural network’s behavior suggests that dopamine also conveys and encodes information about tasks and rule structures, according to the researchers. - https://medium.com/@skychain.global/googles-deepmind-is-using-ai-to-explore-dopamine-s-role-in-learning-d07e7521b16b