Figure 1.

(A) Mirror antisaccade task. A participant fixates on a stimulus (FP) centered on the screen. Once a peripheral stimulus (S) appears the participant must suppress the saccade toward the peripheral stimulus (error prosaccade) and instead make an eye movement to equidistant position in the opposite hemifield (antisaccade). (B) Mean of median error prosaccade, antisaccade, and corrected antisaccade reaction times (RTs) for controls and patients. (C) Mean percent error rate of controls and patients performing the mirror antisaccade task. (D–F) Average cumulative percent distributions of error prosaccades (D), antisaccades (E), and corrected antisaccades (F) for controls and patients.