Figure 4.

Recognition performance of the transformed object views. Rat group average recognition performance over the four variation axes along which the objects were transformed. Gray and black symbols represent performances in, respectively, regular and bubbles trials that were collected over the course of the same testing sessions of experimental Phase II (see Materials and Methods). Solid and open symbols represent performances that were, respectively, significantly and nonsignificantly higher than chance: A–C, p < 0.0001 (one-tailed, unpaired t test); D, p < 0.05 (one-tailed, unpaired t test). Error bars indicate SEM.