Returns FreeSurfer sulcal depth (sulc) for each hemisphere of a
bundled fsaverage template, suitable as the anatomy underlay of
[surface_figure()] or [render_surface_rgba()]. Positive values are deeper
(sulcal); the renderers detect this polarity automatically.
Value
A named list with numeric vectors "lh" and "rh",
one value per vertex of [load_fsaverage()] for the same density.
Examples
# \donttest{
sulc <- load_fsaverage_sulc("fsaverage5")
range(sulc$lh)
#> [1] -1.493725 1.806910
# }