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Fig. 5 | Attention, Perception, & Psychophysics

Fig. 5

From: Feature integration theory in non-humans: Spotlight on the archerfish

Fig. 5

Rats exhibit parallel and serial visual search. (A) Median reaction time did not change with set size in a feature task (dark gray) or a conjunction task (light gray). Error bars denote the standard error of the mean. (B) Accuracy, on the other hand, did decrease as the set size increased, and more significantly so for the conjunction task (light gray) than for the feature task (dark gray) (Task Type F1, 15 = 179.63, p < 0.001, η2 = 0.92), indicating relative inefficiency compared to the feature tasks. (C) The visual search stimuli for the feature and conjunction tasks with three different set sizes (three, five, and seven distractors). The target was always the white square. There were two different types of feature search trials: Homogeneous and heterogeneous. On homogeneous trials, all distractors were identical, whereas on heterogeneous trials, the distractors were not identical. Specifically, one type of heterogeneous feature search trial required discrimination of the target from the distractors based on luminance (dark or bright) and the other type required discrimination based on shape (square or triangle). Images are reproduced based on Botly and De Rosa (2011)

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