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Dear FreeSurfer experts,

I'm trying to resample cortical thickness data onto the fsaverage6 template subject in FreeSurfer v6. I have copied fsaverage6 into my $SUBJECTS_DIR.

I tried the following 2 commands:
* mris_preproc --s subject1 --target fsaverage6 --hemi lh --meas thickness --fwhm 5 --out lh.thickness.fwhm5.fsaverage6.mgh

and alternatively:

* recon-all -s subject1 -qcache -measure thickness -target fsaverage6

Both fail because the file subject1/surf/lh.fsaverage6.sphere.reg is missing (see attached recon-all.log file).

How can I generate the ?h.fsaverage6.sphere.reg file?

I tried:
mris_register subject1/surf/lh.sphere fsaverage6/surf/lh.sphere subject1/surf/lh.fsaverage6.sphere.reg

However, that fails as well, see attached file mris_reg_output.txt for the error message.

All the best,

Tim

--
Dr. Tim Schäfer
Postdoc Computational Neuroimaging
Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy
University Hospital Frankfurt, Goethe University Frankfurt am Main, Germany