Fig. 2.

Saliency probability maps (columns) averaged across all participants in the $M_{\mathit{BA}}$ test set of 1,339 participants from ADNI, NACC, and UKBB. Axial cross sections are overlaid on an MNI 152 atlas. Each row is for a unique MNI z-coordinate value in millimeters, as indicated in the leftmost column. The saliency of each voxel indicates the degree to which that voxel influences the model’s BA estimation