Figure 24.

Learning 3D perspectival transforms of features. Representations of the 6 visual stimuli with 3 surface features (triples) presented to VisNet during the simulations described in Section 5.6. Each stimulus is a sphere that is uniquely identified by a unique combination of three surface features (a vertical, diagonal, and horizontal arc), which occur in 3 relative positions A, B, and C. Each row shows one of the stimuli rotated through the 5 different rotational views in which the stimulus is presented to VisNet. From left to right the rotational views shown are: (i) –60°, (ii) –30°, (iii) 0° (central position), (iv) +30°, and (v) +60°. (After Stringer and Rolls, 2002.)