Jocham, G;
Brodersen, KH;
Constantinescu, AO;
Kahn, MC;
Ianni, AM;
Walton, ME;
Rushworth, MFS;
(2016)
Reward-Guided Learning with and without Causal Attribution.
Neuron
, 90
(1)
pp. 177-190.
10.1016/j.neuron.2016.02.018.
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Abstract
When an organism receives a reward, it is crucial to know which of many candidate actions caused this reward. However, recent work suggests that learning is possible even when this most fundamental assumption is not met. We used novel reward-guided learning paradigms in two fMRI studies to show that humans deploy separable learning mechanisms that operate in parallel. While behavior was dominated by precise contingent learning, it also revealed hallmarks of noncontingent learning strategies. These learning mechanisms were separable behaviorally and neurally. Lateral orbitofrontal cortex supported contingent learning and reflected contingencies between outcomes and their causal choices. Amygdala responses around reward times related to statistical patterns of learning. Time-based heuristic mechanisms were related to activity in sensorimotor corticostriatal circuitry. Our data point to the existence of several learning mechanisms in the human brain, of which only one relies on applying known rules about the causal structure of the task.
| Type: | Article |
|---|---|
| Title: | Reward-Guided Learning with and without Causal Attribution |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.neuron.2016.02.018 |
| Publisher version: | https://doi.org/10.1016/j.neuron.2016.02.018 |
| Language: | English |
| Additional information: | This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). |
| Keywords: | Science & Technology, Life Sciences & Biomedicine, Neurosciences, Neurosciences & Neurology, Orbitofrontal Cortex, Prefrontal Cortex, Decision-Making, Frontal-Cortex, Brain Images, Choices, Reinforcement, Lesions, Amygdala, Neurons |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > UCL Queen Square Institute of Neurology UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > UCL Queen Square Institute of Neurology > Clinical and Experimental Epilepsy |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10025979 |
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