Fig. 5.

a) Parameter estimates ${\tilde{f}}_1$ and ${\tilde{D}}_1$, in the oWM (orange), cWM (green), and cGM (blue) ROIs, where each point represents a voxel. b-c) Map of the fits of Eqs. [3] (not assuming zero apparent diffusivity) and [4] (assuming zero apparent diffusivity) in an axial slice of the cGM, respectively; the cerebellar WM is masked out. $D$ has units ${\mathrm{\mu m}}^2/\mathrm{ms}$.