You can break the annotation into separate labels (mri_annotation2label), then merge the ones you want into a single label (mri_mergelabels), then recombine them into an annotation (mris_label2annot)

On 11/29/2017 10:03 PM, Michiko H. wrote:

Hi Freesurfer Experts,

I was wondering what the best way of combining regions within a parcellation? For example, in the Schaefer 2017 functional atlas, there are regions such as:

7Networks_LH_DorsAttn_FEF_1           0 118 22  0 7Networks_LH_DorsAttn_FEF_2           0 119 17  0 7Networks_LH_DorsAttn_FEF_3           0 119 18  0 7Networks_LH_DorsAttn_FEF_4           0 119 19  0 7Networks_LH_DorsAttn_PrCv_1          0 119 20  0 7Networks_LH_DorsAttn_PrCv_2          0 119 21  0

If I would like to combine all the DorsAttn_FEF areas into 1 node and DorsAttn_PRCv areas into another, what is the best way to do this? I currently have an image that has been parcellated using this atlas that was brought into volumetric space. I would need to have a transformed re-parcellated file and a corresponding color LUT file.

Would appreciate any help, thank you!

Best, Michiko

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