Hi, I have some question on mri_segstats

1) --seg-erode Nerodes
Is it the size of the window for erosion?

2) --robust percent
Is it the percentage of tissue in each voxel?

3) If I want to combine Left and Right together and calculate the statistics, for example the mean and std of the "Left/Right Caudate", how to do that?

Thank you,
Fang