Dear Freesurfer Users,
We have a little problem with mri_surf2surf. Our goal is to determine the statistical data - t-test, ANOVA, for a group of subjects. So initially we made the recon-all, autorecon1,2,3 and -qcache for all subjects. After that we created the FSGD file and mris_preproc - in order to create ?h.thickness.mgh file. Now in order to initiate the  mri_glmfit step we have to create the ?h.thickness.sm10..mgh file with the mri_surf2surf command.

We used this command line:

mri_surf2surf --hemi lh \
 --s average \
 --sval lh.thickness.mgh \
 --fwhm 10 \
 --tval lh.thickness.sm10.mgh

and we receive the Error:
– /usr/local/freesurfer/subjects/average/surf/lh.sphere.reg – could not open file

Could you please tell us where might be the mistake ? What step is needed to create the lh.sphere.reg file. Thank you very much for your help.

Best regards,
Dr. Alexandru Hanganu
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