Analysis of task performance
We controlled behavioral data quality by monitoring premature (reaction time, RT, shorter than 0.1 s) and inattentive responses (RT longer than 3 SDs above the individual mean). Participants made no premature response and very few inattentive responses (pramipexole: 1.1%, placebo: 1.5%). The inattentive responses were excluded from further analysis.First, we detected the pramipexole effects on accuracy and RT using ANOVAs with two factors (