Hi,
I am also trying to perform first level analysis using Freesurfer parcellation. As you advised in the previous post I used patient-specific parcellation file aprac.a2009s+aseg.nii (one for each subject). However, in the output file I obtained only one seed, and no division into ROIs. I should obtain 148 seed ROIs. I guess I am doing something really wrong. Could you please advise me what should I do in order to obtain correlations for all ROIs in the parcellation file?

Best regards,
Justyna