Prefrontal signals precede striatal signals for biased credit assignment in motivational learning biases

Johannes Algermissen (), Jennifer C. Swart, René Scheeringa, Roshan Cools and Hanneke E. M. den Ouden ()
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Johannes Algermissen: Radboud University, Donders Institute for Brain, Cognition and Behaviour
Jennifer C. Swart: Radboud University, Donders Institute for Brain, Cognition and Behaviour
René Scheeringa: Radboud University, Donders Institute for Brain, Cognition and Behaviour
Roshan Cools: Radboud University, Donders Institute for Brain, Cognition and Behaviour
Hanneke E. M. den Ouden: Radboud University, Donders Institute for Brain, Cognition and Behaviour

Nature Communications, 2024, vol. 15, issue 1, 1-19

Abstract: Abstract Actions are biased by the outcomes they can produce: Humans are more likely to show action under reward prospect, but hold back under punishment prospect. Such motivational biases derive not only from biased response selection, but also from biased learning: humans tend to attribute rewards to their own actions, but are reluctant to attribute punishments to having held back. The neural origin of these biases is unclear. Specifically, it remains open whether motivational biases arise primarily from the architecture of subcortical regions or also reflect cortical influences, the latter being typically associated with increased behavioral flexibility and control beyond stereotyped behaviors. Simultaneous EEG-fMRI allowed us to track which regions encoded biased prediction errors in which order. Biased prediction errors occurred in cortical regions (dorsal anterior and posterior cingulate cortices) before subcortical regions (striatum). These results highlight that biased learning is not a mere feature of the basal ganglia, but arises through prefrontal cortical contributions, revealing motivational biases to be a potentially flexible, sophisticated mechanism.

Date: 2024
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DOI: 10.1038/s41467-023-44632-x

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