Rudolf N. Cardinal

The paper uses reinforcement learning models and fMRI to analyze cognitive flexibility differences in Gambling Disorder and Cocaine Use Disorder, finding distinct neural and behavioral patterns.

This study shows that serotonin manipulations affect decision-making flexibility in rats and humans through similar computational mechanisms.

This study investigates how LSD affects reinforcement learning in humans by examining changes in learning rates, reinforcement sensitivity, and exploratory behavior during a probabilistic reversal learning task.

This study shows that serotonin depletion impairs reversal learning and emotional updating in humans, correlating with the degree of tryptophan depletion.

This study identifies distinct roles of primate PFC sub-regions and the caudate nucleus in goal-directed behavior using pharmacological inactivation and over-activation in marmosets.

The paper was withdrawn due to substantial changes in results and interpretation after further analysis.

The paper shows that serotonin depletion enhances emotional responses to social conflict, interacting with personality traits to produce distinct emotions like guilt and annoyance.

This study examines how tryptophan depletion affects conditioned threat memory and finds that serotonin reduction attenuates emotional memory expression, particularly in individuals with higher intolerance of uncertainty.

This study investigates whether actions in OCD are goal-directed or habitual by manipulating action-outcome contingency, finding that OCD patients show dissociation between explicit knowledge and behavior.