Browsing School of Biological and Chemical Sciences by Subject "Reward"
Now showing items 1-7 of 7
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Bumblebees socially learn behaviour too complex to innovate alone.
(2024-03)Culture refers to behaviours that are socially learned and persist within a population over time. Increasing evidence suggests that animal culture can, like human culture, be cumulative: characterized by sequential innovations ... -
Dopamine enhances model-free credit assignment through boosting of retrospective model-based inference.
(eLife, 2021-12-09)Dopamine is implicated in representing model-free (MF) reward prediction errors a as well as influencing model-based (MB) credit assignment and choice. Putative cooperative interactions between MB and MF systems include a ... -
Efficiency and prioritization of inference-based credit assignment.
(Elsevier, 2021-07-12)Organisms adapt to their environments by learning to approach states that predict rewards and avoid states associated with punishments. Knowledge about the affective value of states often relies on credit assignment (CA), ... -
Human subjects exploit a cognitive map for credit assignment.
(PNAS, 2021-01-26)An influential reinforcement learning framework proposes that behavior is jointly governed by model-free (MF) and model-based (MB) controllers. The former learns the values of actions directly from past encounters, and the ... -
Model based planners reflect on their model-free propensities.
(PLOS, 2021-01)Dual-reinforcement learning theory proposes behaviour is under the tutelage of a retrospective, value-caching, model-free (MF) system and a prospective-planning, model-based (MB), system. This architecture raises a question ... -
Redefining the relationship between effort and reward: Choice-execution model of effort-based decisions.
(2020-04-06)Neuroscientific studies reliably demonstrate that rewards play a crucial role in guiding our choices when confronted with different effortful actions we could make. At the same time, psychological and economic research ... -
Serotonin depletion impairs both Pavlovian and instrumental reversal learning in healthy humans.
(Springer Nature, 2021-08-24)Serotonin is involved in updating responses to changing environmental circumstances. Optimising behaviour to maximise reward and minimise punishment may require shifting strategies upon encountering new situations. Likewise, ...