Hi list,using FS-FAST I have obtained a map reporting - Red_positive cluster shows difference for FC of group A > FC of group B- Blue_negative cluster shows difference for FC of group B < FC of group A Because I would like to extract the value of cortical thickness from each cluster, I have saved using tksurfer the ROI.label of each cluster (Red_positive.label and Blue_negative.label) Please note that each cluster was thresholded + 1.3 Red_positive.label - 1.3 Blue_negative.label Next, I have extracted the thickness of each cluster.Thus, I have used:mri_label2label --srcsubject Subj01 --srclabel ROI.label --trgsubject Subj01 --trglabel Subj01/label/ROI.label --hemi lh --regmethod surfaceandmris_anatomical_stats -l Subj01/label/ROI.label -b Subj01 When applied the mri_anatomical_stats to blu cluster (Blue_negative.label), this error occurs:

mris_anatomical_stats -l Subj01/ROI_neg.label -b Subj01 lh limiting computations to label /Subj01/label/ROI_neg.label.reading volume Subj01/mri/wm.mgz...reading input surface Subj01/surf/lh.white...Using TH3 vertex volume calcTotal face volume 211969Total vertex volume 209028 (mask=0)reading input pial surface Subj01/surf/lh.pial...reading input white surface Subj01/surf/lh.white...No such file or directorymris_anatomical_stats: could not open label file Subj01/label/ROI_neg.labelNo such file or directorySubj01: could not read label file Subj01/label/ROI_neg.label Thanks Stefano