Marc Guitart‐Masip

Assessing reinforcement learning and vigor with an online decision-making battery

The paper develops an online decision-making battery to assess reinforcement learning and vigor, finding two distinct factors with moderate reliability and associations with mania but not depression.

Bi-phasic patterns of age-related differences in dopamine D1 receptors across the adult lifespan

The paper identifies a bi-phasic pattern of age-related dopamine D1 receptor decline, with distinct functional consequences before and after 40 years of age.

Motivational learning biases are differentially modulated by genetic determinants of striatal and prefrontal dopamine function

The paper replicates a finding that DRD2/ANKK1 TaqIA A1 allele carriers show reduced learning performance in reward inhibition tasks and suggests COMT Val108/158Met Met homozygotes have lower learning bias.

Dopamine and reward-related vigor in younger and older human participants

The paper examines how reward and dopamine affect vigor in younger and older humans, finding similar reward effects across age groups with weak dopamine receptor involvement.

Neural signatures of arbitration between Pavlovian and instrumental action selection

The paper investigates how inferred controllability modulates Pavlovian and instrumental action selection using neural data from a Go/NoGo task.

Learning in anticipation of reward and punishment: Perspectives across the human lifespan

This study investigates learning across the human lifespan using a go/no-go task, showing age-related differences in reward and punishment sensitivity.

A generic decision-making ability predicts psychopathology in adolescents and young adults and is reflected in distinct brain connectivity patterns

The paper identifies a general decision-making ability, decision acuity, linked to psychopathology and distinct brain connectivity patterns in adolescents and young adults.