Explanatory pluralism: An unrewarding prediction error for free energy theorists

  title={Explanatory pluralism: An unrewarding prediction error for free energy theorists},
  author={Matteo Colombo and Cory Wright},
  journal={Brain and Cognition},
Courtesy of its free energy formulation, the hierarchical predictive processing theory of the brain (PTB) is often claimed to be a grand unifying theory. To test this claim, we examine a central case: activity of mesocorticolimbic dopaminergic (DA) systems. After reviewing the three most prominent hypotheses of DA activity-the anhedonia, incentive salience, and reward prediction error hypotheses-we conclude that the evidence currently vindicates explanatory pluralism. This vindication implies… CONTINUE READING
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