Publication: Variability in Action Selection Relates to Striatal Dopamine 2/3 Receptor Availability in Humans: A PET Neuroimaging Study Using Reinforcement Learning and Active Inference Models
Variability in Action Selection Relates to Striatal Dopamine 2/3 Receptor Availability in Humans: A PET Neuroimaging Study Using Reinforcement Learning and Active Inference Models
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Adams, R. A., Moutoussis, M., Nour, M. M., Dahoun, T., Lewis, D., Illingworth, B., Veronese, M., Mathys, C., de Boer, L., Guitart-Masip, M., Friston, K. J., Howes, O. D., & Roiser, J. P. (2020). Variability in Action Selection Relates to Striatal Dopamine 2/3 Receptor Availability in Humans: A PET Neuroimaging Study Using Reinforcement Learning and Active Inference Models. Cerebral Cortex, 30(6), 3573–3589. https://doi.org/10.1093/cercor/bhz327
Abstract
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Choosing actions that result in advantageous outcomes is a fundamental function of nervous systems. All computational decision-making models contain a mechanism that controls the variability of (or confidence in) action selection, but its neural implementation is unclear—especially in humans. We investigated this mechanism using two influential decision-making frameworks: active inference (AI) and reinforcement learning (RL). In AI, the precision (inverse variance) of beliefs about policies controls action selection variability—simila
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- Adams, Rick A
- Moutoussis, Michael
- Nour, Matthew M
- Dahoun, Tarik
- Lewis, Declan
- Illingworth, Benjamin
- Veronese, Mattia
- Mathys, Christoph
- de Boer, Lieke
- Guitart-Masip, Marc
- Friston, Karl J
- Howes, Oliver D
- Roiser, Jonathan P
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Adams, R. A., Moutoussis, M., Nour, M. M., Dahoun, T., Lewis, D., Illingworth, B., Veronese, M., Mathys, C., de Boer, L., Guitart-Masip, M., Friston, K. J., Howes, O. D., & Roiser, J. P. (2020). Variability in Action Selection Relates to Striatal Dopamine 2/3 Receptor Availability in Humans: A PET Neuroimaging Study Using Reinforcement Learning and Active Inference Models. Cerebral Cortex, 30(6), 3573–3589. https://doi.org/10.1093/cercor/bhz327
