Figure 1.

Stimulus setup and probe procedure (experiments 1 and 2). A, Example search array of the multiple-distractor condition of experiment 1. The popout target (the red or the green C) was presented together with four blue distractors in its surround. B, Example array of the single-distractor condition of experiment 1. The target was presented together with only one distractor in the opposite VF. C, D, Illustration of the three attention-to-probe distances in experiment 1. When presented, the probe (the white ring) always appeared at the center item location (C) or the corresponding blank location (D) in the target VF. E, F, Example search arrays of the multiple- (E) and no- (F) distractor conditions in experiment 2. Trials of the multiple- and no-distractor conditions were run in separate and alternating experimental blocks.