Fig. 4

Eye movement during visual search. (a–c) Sample search trials for faces. The white trace indicates eye gazes. The red square indicates the position of the central fixation (shown during search). (d) Distribution of the number of fixations for two monkeys. (e) Cumulative distribution of fixation duration. (f) Percentage of target (T) fixations that were immediately revisited (with only one item in between; only the same target item was considered). (g) Percentage of target (T) fixations that were eventually revisited (with any number of items in between; only the same target item was considered).