FIGURE 1.

On each trial, participants began by fixating at a central point. Following a variable duration of 300–700 ms, a visual array of four stimuli was presented; 800–1200 ms later, a central movement cue was presented, which instructed the participant to look at the visual stimulus at the cued location. After a short, variable delay, a probe array containing one letter (the probe) was briefly presented (118 or 188 ms) in a location that was either congruent or incongruent with the location indicated by the movement cue. Then, the original stimulus array was presented for a duration that ensured that all trials lasted for 700 ms after movement cue onset. Finally, participants were asked to select the probe stimulus out of four response options using the mouse.