Dear Bruce,

thanks for your reply. Since the documentation of the output of this function is poor, could you tell me what resulting files I can expect by performing CVS? Also my other question: Since the connectivity between vertices can be read from ?h.sphere.reg, is this also possible to get the relationship between voxels out of any file ?

I am very thankful for your reply.

Greetings, Daniel van de Velden

-----Ursprüngliche Nachricht----- Von: freesurfer-bounces@nmr.mgh.harvard.edu [mailto:freesurfer-bounces@nmr.mgh.harvard.edu] Im Auftrag von Bruce Fischl Gesendet: Montag, 4. September 2017 16:22 An: Freesurfer support list freesurfer@nmr.mgh.harvard.edu Cc: Lilla Zollei lzollei@nmr.mgh.harvard.edu Betreff: Re: [Freesurfer] volume registration; volume connections;

Hi Daniel

yes, CVS can extend the nonlinear surface warp into the volume

cheers Bruce

On Mon, 4 Sep 2017, Daniel van de Velden wrote:

Dear Freesurfer-Team,

I am trying to study volume based neuronal activities via a Spatio Temporal Clustering Test. Therefore I need to morph my subjects to an average subject. I couldn't find a non-linear morphing command to perform this. Is there any function and can I extract to resulting morphing map that was used to morph the subjects ? Something like the 'hemisphere'.sphere.reg files, which are automatically created by the 'recon-all' function. Additionally is it possible to extract the volume neighboring connection from a 'hemisphere'.volume file ?

For further information: I am going to use mne-python to perform the Spatio-Temporal-Clustering. They are extracting the vertice connections via a function ( _get_subject_sphere_tris(subject_from, subjects_dir) ) from the 'hemisphere'.sphere.reg files. Can I also do this for volume data files created by FreeSurfer.

Looking forward to your reply. I am glad to any kind of corporation, I really want this study to work, since the results will be very interesting.

Yours sincerely,

Daniel van de Velden