hi, expert, By mapping a surface label to a functional template, I want to extract the corresponding cortical gray matter region in the functional space. I know I should use the mri_label2vol command. In the help page of mri_label2vol, I see some examples of this command. 2. Convert a surface label into a binary mask in the functional space.Fill in all the cortical gray matter. Require that a functional voxelbe filled at least 30% by the label: mri_label2vol --label lh-avg_central_sulcus.label --temp f.nii --reg register.dat --fillthresh .3 --proj frac 0 1 .1 --subject bert --hemi lh --o cent-lh.nii 3. Convert a surface label into a binary mask in the functional space.Sample a 1mm ribbon 2mm below the gray/white surface. Do not require a fill threshold: mri_label2vol --label lh-avg_central_sulcus.label --temp f.nii --reg register.dat --proj abs -3 -2 .1 --subject bert --hemi lh --o cent-lh.nii I want to extract the cortical gray matter on the functional images corresponding to the surface label. I do not know which of the above commands could obtain the result I want and which parameters I should use to obtain what I want. For example 3, I do not quite catch what "Sample a 1mm ribbon 2mm below the gray/white surface. " this sentence means. Thanks for your help!
Best Yuanchao