Fig. 5.

Task design and behavioral results. A: a trial began with 200 ms of fixation, followed by presentation of a primary target at 5° or 6°. During the primary saccade, the target was erased and a secondary target was presented at 2° or 2.5° displacement with respect to the primary target. Reward was presented following 200-ms fixation of the secondary target. H, horizontal; V, vertical. B: saccade trajectories for subjects M and R during one session. Primary saccades are plotted in blue and corrective saccades in red. Targets were 0.5° × 0.5° square. C: reaction time distribution for primary and corrective saccades. D: distance to target at conclusion of primary and corrective saccades.