Figure 3. Connectivity patterns of the subdivisions of substantia nigra.
Probabilistic fiber tractrography was performed for each SN subdivision to map its whole-brain connectivity patterns. The population tract maps are shown with a threshold of connectivity probability at 0.05 and rendered using MRIcron on the ICBM152 brain template.
Figure 3—figure supplement 1. Distinct and overlapping tractography maps among the subdivisions of substantia nigra.
The first three rows show the whole-brain connectivity maps of the three subdivisions of SN via probabilistic fiber tractography. A threshold of connectivity probability at 0.01 was applied. These tract maps were summarized into a single map shown in the fourth row, which includes both distinct tracts of each subdivision (green for medial SNc, blue for ventral SN and orange for lateral SNc) and their overlapping patterns (violet).
Figure 3—figure supplement 2. Connectivity profiles revealed by deterministic fiber tractography using DSI-studio (http://dsi-studio.labsolver.org/) based on the group averaged template of diffusion data from HCP-500 subjects.
