Figure 2.

Masks for tracking visual and nonimage forming pathways. (a) For each subject the following masks were defined to be used in tracking the visual or the nonimage forming pathway: ON: optic nerve mask, V1: Primary visual cortex, LGN: Lateral geniculate nucleus, pulvinar and thalamus. ON mask was used as the seeding mask and the rest of the masks were used as target or exclusion masks. (b) thalamus and pulvinar segmentation results in one subject along with the group average results of the left and right thalamic and pulvinar volumes (graph). The average pulvinar volume was found to be approximately one‐third that of the thalamus. Th: Thalamus, P: Pulvinar, L: Left, and R: Right (example: P‐L: Left Pulvinar)