Executive Function Assigns Value to Novel Goal-Congruent Outcomes
Overview
Affiliations
People often learn from the outcomes of their actions, even when these outcomes do not involve material rewards or punishments. How does our brain provide this flexibility? We combined behavior, computational modeling, and functional neuroimaging to probe whether learning from abstract novel outcomes harnesses the same circuitry that supports learning from familiar secondary reinforcers. Behavior and neuroimaging revealed that novel images can act as a substitute for rewards during instrumental learning, producing reliable reward-like signals in dopaminergic circuits. Moreover, we found evidence that prefrontal correlates of executive control may play a role in shaping flexible responses in reward circuits. These results suggest that learning from novel outcomes is supported by an interplay between high-level representations in prefrontal cortex and low-level responses in subcortical reward circuits. This interaction may allow for human reinforcement learning over arbitrarily abstract reward functions.
Huang Y, Weng Y, Lan L, Zhu C, Shen T, Tang W Psychoradiology. 2024; 3:kkad025.
PMID: 38666121 PMC: 10917385. DOI: 10.1093/psyrad/kkad025.
Reward Reinforcement Creates Enduring Facilitation of Goal-directed Behavior.
Ballard I, Waskom M, Nix K, DEsposito M J Cogn Neurosci. 2024; 36(12):2847-2862.
PMID: 38579249 PMC: 11602007. DOI: 10.1162/jocn_a_02150.
Intrinsic rewards explain context-sensitive valuation in reinforcement learning.
Molinaro G, Collins A PLoS Biol. 2023; 21(7):e3002201.
PMID: 37459394 PMC: 10374061. DOI: 10.1371/journal.pbio.3002201.
Sensorimotor feedback loops are selectively sensitive to reward.
Codol O, Kashefi M, Forgaard C, Galea J, Pruszynski J, Gribble P Elife. 2023; 12.
PMID: 36637162 PMC: 9910828. DOI: 10.7554/eLife.81325.
Advances in modeling learning and decision-making in neuroscience.
Collins A, Shenhav A Neuropsychopharmacology. 2021; 47(1):104-118.
PMID: 34453117 PMC: 8617262. DOI: 10.1038/s41386-021-01126-y.