Dissimilarity matrices.

Matrices of Euclidean distances for pixel gray-levels (A), the IT neurons (B), and 5 layers of the trained and untrained versions of 2 deep CNNs (C). Note that the dissimilarity matrices are by definition symmetric about the diagonal of zeros, which is plotted in white color. The stimulus groups are indicated in (A) as in Fig 1 and the CNN layers in (C) have the same terminology as in Fig 2. The matrices have been separately normalized and are plotted in percentile units, following [23]. Dissimilarities increase from blue to yellow.