Dear Freesurfer experts,
I have a question regarding mris_divide_parcellation. I have created a file containing the parcels from aparc.annot that I want to split and I have run the following command. Why is Freesurfer allocating 36 additional units? When I open the new annotation file (rh.aparc.splitted) with matlab (using read_annotation), I can see that at the end of colortable.struct_names there are a lot of parcels called "cluster38, cluster39, ..., cluster71". What are exactly these clusters?
Many thanks, Yolanda
*In splittable.txt* file precentral 2
*Command*
./mris_divide_parcellation fsaverage rh aparc.annot splittable.txt rh.aparc.splitted
*Output*
reading colortable from annotation file... colortable with 36 entries read (originally /autofs/space/amaebi_026/users/buckner_cortical_atlas/scripts/colortable_final.txt) interpreting 4th command line arg as split file name dividing precentral into 2 parts allocating new colortable with 36 additional units... saving annotation to rh.aparc.splitted writing colortable into annotation file...