FIG. 1.

(A) The ICBM-DTI-81 atlas, which was created by averaging the 81 normative DTI from the International Consortium of Brain Mapping (ICBM) database. The white matter parcellation map is superimposed and shown in D. (B) Single human DTI, which was linearly normalized to ICBM space. Hand-segmented deep white matter map (color contour) was overlaid with superficial white matter (white contour) segmented by fractional anisotropy thresholding (E). (C) Single macaque DTI. Hand-segmented deep white matter map (color contour) was overlaid with superficial white matter (white contour) segmented by fractional anisotropy thresholding (F). Figures in A and D are from previous publications and are presented in this figure to enable comparison with the single-subject images. DTI, diffusion tensor imaging; ACR, anterior corona radiata; ALIC, anterior limb of internal capsule; CG, cingulum; EC, external capsule; Fx, fornix; GCC, genu of the corpus callosum; PLIC, posterior limb of the internal capsule; PTR, posterior thalamic radiation; RLIC, retrolenticular part of the internal capsule; SCC, splenium of the corpus callosum.