Fig. 9.

Rat visual object recognition strategy uncovered using the Bubbles method. (A) Examples of bubbles masked stimuli used by Vermaercke and Op de Beeck [121]. (B) The regions (in red) that were found to be diagnostic of object identity (named thresholded behavioral templates) in Vermaercke's and Op de Beeck's study for rats (left) and for an ideal observer (right). (C) Behavioral templates obtained for the rats (left) and the ideal observer (right), using only trials in which the bottom part of the stimuli was masked. (D) Examples of bubbles masked stimuli used by Alemi-Neissi et al. [120]. (E, F) Saliency maps, showing the patterns of significantly salient (in orange) and anti-salient (in light blue) features obtained for Objects 1 and 2 in the study of Alemi-Neissi and colleagues. (E) and (F) show, respectively, the results for the rats and for a simulated ideal observer. (For interpretation of the references to color in this figure legend, the reader is referred to the web version of this article.)

Panels (A)–(C) are modified from Vermaercke and Op de Beeck [121]. Panels (D)–(F) are modified from Alemi-Neissi et al. [120].