Neither reason really holds up. The surface vertex does not have a
volume associated with it. The extra vertices just look like smoothness
in the correction for multiple comparisons (which you will have
regardess), so there is no penalty. Bottom line is that you should stick
to fsaverage ico7
External Email - Use Caution
Hi Doug,
We thought it would be better to use 5th order icosahedron tesselation for
PET because the resolution of the volume is lower: If, for thickness
analysis, we carry the structural volumes with a resolution of 1x1x1 to
ico7 on the surface, with
You could do it, but I would just use fsaverage. I don't understand
what the relationship would be between the number of vertices on the
surface and the number of voxels in the PET volume or the rational for
using the 5th order ico
On 2/12/2020 8:03 AM, Marina Fernández wrote:
External Email - Use Caution
Hi experts,
This is a question related to PetSurfer steps.
I would like to know if it is correct to sample the mgx volume onto the
surface of the average subject of my dataset (created with 5th order
icosahedron tesselation) instead of the fsaverage
