Fig. 8

a Images in simplification of the conventional colored dot experiment in <abbrgrp>225</abbrgrp>. b Network with two learned patterns corresponding to the simplified experiment; symmetry group is $\Gamma ={\mathbf{S}}_4\times {\mathbf{Z}}_2(\rho )$. $\mathit{UL}=\text{upper left}$, $\mathit{LL}=\text{lower left}$, $\mathit{LR}=\text{lower right}$, $\mathit{UR}=\text{upper right}$