Goran Papenberg

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.

The paper investigates the relationship between brain iron levels and dopamine D1 receptors across the adult lifespan, finding that elevated iron and reduced D1DR in older adults correlate with impaired working memory.

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.

This study examines how neural variability during working memory is regulated by dopamine, functional integration, and decision-making using PET and fMRI data.