Figure 6.

On each trial, observers saw six surfaces (one target, five distractors) and reported whether the orientation of the target surface was “horizontal” or “vertical.” In this example, the target is vertical and located in the upper right. Stimuli were presented in the following three conditions. In the simultaneous display, all six search items were presented at once (a). In the sequential display, the same search items were presented, but divided into subsets of two across three sequential frames (b). In the repeated display, all six items were presented in the same configuration across three sequential frames (c).