Fig. 1.

The fixation cross was presented for 400 ms. After that, the target and the cue was displayed until participants responded or 2.5 s of no response. In this paradigm, participants were instructed to make a prosaccade toward the colored singleton when the inner circle was darker than the outer concentric circle. When the inner circle was brighter than the outer one, participants needed to make an antisaccade away from the colored singleton (the arrows were not presented on the screen during the actual task).