[Freesurfer] Mapping stats into volume with mri_label2vol

Hello all,

I am trying to map polar angle and eccentricity into the voxels underneath a particular label. For each vertex in the label file, I’ve put in the respective angle in the stats column. I then used mri_label2vol with the --label-stat flag to map the angle values into the volume. Comparing the angle values for each individual voxel and each vertex, I’ve noticed that some values that are in the voxels are not present in the vertices (ie a particular voxel might have a value of 0.5 but none of the vertices have that exact value). What happens when the values are mapped from the vertex into the volume? Is there some averaging or weighting process or something?

Many thanks,

jack