[Freesurfer] Questions about the different ways in which metrics such as the cortical surface area can be extracted in Freesurfer

External Email - Use Caution Dear FreeSurfer developers,            The surface area in fsaverage space that I extracted with the first command below is not the same as the value under the same DK brain region extracted from the lh.parc.stats file generated as a result of prepro

[Freesurfer] Questions about the different ways in which metrics such as the cortical surface area can be extracted in Freesurfer

External Email - Use Caution Dear FreeSurfer developers,       When I extract the surface area of the brain regions corresponding to the DK atlas in fsaverage space with the following command, the corresponding DK atlas brain regions calculated after summation or averaging, whet

Re: [Freesurfer] Questions about the different ways in which metrics such as the cortical surface area can be extracted in Freesurfer

External Email - Use Caution when you convert to fsaverage space, there is some interpolation that will cause the two to be not exactly the same. They should be very close though On 8/17/2023 11:27 AM, 1500787798 wrote: External Email - Use Caution Dear FreeSurfer dev

Re: [Freesurfer] Questions about the different ways in which metrics such as the cortical surface area can be extracted in Freesurfer

External Email - Use Caution It looks like you are transforming it to fsaverage space before computing the statistics. If this is correct, then that will explain the differences as that transform will involve some interpolation which will change the values. But they should be ver