The Dopamine Reward Prediction Error Model: A Scientific Debate

The reward prediction error (RPE) model has long been used to explain dopamine's role in reward learning. However, recent studies have challenged this model. Some studies found RPE struggles to explain temporal dynamics of dopamine signals and variations in animal learning. Alternatives, like the adjusted net contingency for causal relations (ANCCR) model, have shown better performance in predicting dopamine release. Despite this, many researchers still consider RPE a useful framework for understanding dopamine, needing only refinement. This scientific debate highlights the inherent diversity of viewpoints and ongoing exploration in scientific research.