Figure 1.

A 3D mesh morphed to the structural MRI data of a representative participant. Panels (a)–(d) show the anatomical landmarks that were used as anchor points for scalp distance calculations marked on a T1-volume surface mesh created using Brain Voyager. N: nasion, RT and LT: right and left tragi, respectively, and IN: inion. The lines connecting the anatomical landmarks are “patches of interest” (POIs) drawn in Brain Voyager that link adjacent triangles in the mesh. Panels (e) and (f) show close-up views of the mesh without the surface coloring. The mesh has been cut axially at the level of the inion. The smooth surface of the head is represented using triangular elements and each of these elements is defined by its tricorners.