Figure 4.

A, Target and distractors used for training. B, Increase in performance at detection of a target object embedded in an array of distracters of similar shape, through several days of training. Performances are given as the percentage of correct detection of the target against the total number of appearances of the target. Dashed line represents chance level. Single subject, Error bars represent SEs across individual blocks. *p < 0.01; **p < 0.001, compared with the performance of the first day.