Orbitofrontal ¹⁸F-DOPA Uptake and Movement Preparation in Parkinson’s Disease

Figure 1

Motor task. (1) One of eight targets turns black (target presentation); then (2) the patient moves the cursor toward the target as soon as possible (outgoing movement) and (3) returns to the centre right after reaching the target (return movement). The reaction time is the time required to start the movement after target presentation.