Fig 5. Evolution of the volume of activity evoked by the different categories in ventral visual cortex.

(A) Slices showing the analyzed ventral visual region (“ventral mask”). (B) Percentage of voxels showing activity specific to at least 1 visual category (i.e., voxels whose activity was significant at p < .001 in the contrast of one category relative to all others). The active volume was expressed, in each child, as a proportion of ventral visual volume (i.e., the intersection of each child’s gray matter mask and the left and right ventral masks). (C) total volume (in mm³) of voxels showing significantly more activity for a given category relative to all others (voxelwise p < 0.001, uncorrected). For reference, the search regions were 36,080 mm³ (left) and 35,896 mm³ (right), and the volume expected by chance would therefore be approximately 36 mm³. S2 Data.