Reinforcement learning in artificial and biological systems

EO Neftci, BB Averbeck - Nature Machine Intelligence, 2019 - nature.com
There is and has been a fruitful flow of concepts and ideas between studies of learning in
biological and artificial systems. Much early work that led to the development of …

Reinforcement-learning in fronto-striatal circuits

B Averbeck, JP O'Doherty - Neuropsychopharmacology, 2022 - nature.com
We review the current state of knowledge on the computational and neural mechanisms of
reinforcement-learning with a particular focus on fronto-striatal circuits. We divide the …

[PDF][PDF] Prefrontal cortex predicts state switches during reversal learning

R Bartolo, BB Averbeck - Neuron, 2020 - cell.com
Reinforcement learning allows organisms to predict future outcomes and to update their
beliefs about value in the world. The dorsal-lateral prefrontal cortex (dlPFC) integrates …

Motivational neural circuits underlying reinforcement learning

BB Averbeck, VD Costa - Nature Neuroscience, 2017 - nature.com
Reinforcement learning (RL) is the behavioral process of learning the values of actions and
objects. Most models of RL assume that the dopaminergic prediction error signal drives …

[HTML][HTML] Everything is connected: inference and attractors in delusions

RA Adams, P Vincent, D Benrimoh, KJ Friston… - Schizophrenia …, 2022 - Elsevier
Delusions are, by popular definition, false beliefs that are held with certainty and resistant to
contradictory evidence. They seem at odds with the notion that the brain at least …

Attractor dynamics reflect decision confidence in macaque prefrontal cortex

S Wang, R Falcone, B Richmond, BB Averbeck - Nature Neuroscience, 2023 - nature.com
Decisions are made with different degrees of consistency, and this consistency can be
linked to the confidence that the best choice has been made. Theoretical work suggests that …

[PDF][PDF] Amygdala and ventral striatum make distinct contributions to reinforcement learning

VD Costa, O Dal Monte, DR Lucas, EA Murray… - Neuron, 2016 - cell.com
Reinforcement learning (RL) theories posit that dopaminergic signals are integrated within
the striatum to associate choices with outcomes. Often overlooked is that the amygdala also …

On the normative advantages of dopamine and striatal opponency for learning and choice

A Jaskir, MJ Frank - Elife, 2023 - elifesciences.org
The basal ganglia (BG) contribute to reinforcement learning (RL) and decision-making, but
unlike artificial RL agents, it relies on complex circuitry and dynamic dopamine modulation …

[HTML][HTML] Differential coding of reward and movement information in the dorsomedial striatal direct and indirect pathways

JH Shin, D Kim, MW Jung - Nature communications, 2018 - nature.com
The direct and indirect pathways of the basal ganglia have long been thought to mediate
behavioral promotion and inhibition, respectively. However, this classic dichotomous model …

[HTML][HTML] Blocking D2/D3 dopamine receptors in male participants increases volatility of beliefs when learning to trust others

N Mikus, C Eisenegger, C Mathys, L Clark… - Nature …, 2023 - nature.com
The ability to learn about other people is crucial for human social functioning. Dopamine has
been proposed to regulate the precision of beliefs, but direct behavioural evidence of this is …