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Sequence of events in a trial. Sequence is shown for (A) the spatial and (B) the color version of the cued-recall Sternberg task. Dotted circle indicates gaze direction. The samples were either all different (3-item trials) or all the same (1-item trials). The monkey was required to respond with a saccade (arrow) to that probe that matched 1 of the preceding samples. In the examples shown here, the match probe corresponded to sample 1.
