Antonius Wiehler

Dopamine regulates decision thresholds in human reinforcement learning.

This study investigates dopamine's role in human reinforcement learning using pharmacological interventions and fMRI, finding reduced decision thresholds under dopaminergic manipulations.

Attenuated directed exploration during reinforcement learning in gambling disorder

This study finds that gamblers show reduced strategic exploration during reinforcement learning, linked to altered fronto-parietal network activity and potential dopamine system changes.

Decomposition of reinforcement learning deficits in disordered gambling via drift diffusion modeling and functional magnetic resonance imaging.

This study uses drift diffusion modeling and fMRI to identify computational mechanisms of reinforcement learning deficits in gambling disorder, finding reduced boundary separation and drift rate effects in the gambling group.

Dopaminergic modulation of the exploration/exploitation trade-off in human decision-making

This study investigates how dopamine affects the exploration-exploitation trade-off in human decision-making using computational modeling, pharmacology, and fMRI.

Effects of episodic future thinking on temporal discounting: a re-analysis of six data sets using hierarchical Bayesian parameter estimation and compilation of effect sizes

The paper re-analyzes six temporal discounting datasets using hierarchical Bayesian methods, finding consistent reductions in discounting with medium effect sizes from episodic future thinking.

A potential link between gambling addiction severity and central dopamine levels -- evidence from spontaneous eye blink rates in gamblers and controls

This study examines spontaneous eye blink rates in gamblers and controls to assess links to dopamine levels and addiction severity, finding no difference between groups but associations within gamblers.