Trial procedure and scene examples for the experiment.

<p>(a) Trial sequence of the visual search paradigm. (b) An example of a search scene where the target (red polygon) is closely flanked by two distractors (green polygons) on both sides. (c) Another example of a search scene where the distractor (left) is relatively far from the target compared with another distractor (right). The scene photographs were taken manually by the author (XZ).