-----Original Message----- From: Alex Fornito fornitoa@unimelb.edu.au
Thanks, I did as you suggested, but got a different error telling me that mris_anatomical_stats cannot be used with fsaverage as it is an average subject.
You can try the following "hack": convert the annotation to a series of labels, and then use 'mris_curvature_stats' on these label files. It will dump a bunch of curvature-related measures, but you can ignore these and just extract the surface area measures that it also generates.
$>mri_annotation2label --subject <SUBJ> --hemi lh --annotation lh.test.aparc.annot --labelbase base
This will create a series of label files, base-XXX.label in the <SUBJ>/label directory. You can use 'mris_curvature_stats' on each of these label files. Pass it any curvature file, and just grep for "ROI":
$>mris_curvature_stats -l base-000.label <SUBJ> <hemi> curv | grep ROI ... Raw Mean Vertex Separation (ROI Surface): 0.83274 +- 0.24399 mm Raw ROI Surface Area: 4349.99756 mm^2 Raw ROI Number of Vertices: 07370 Raw ROI Surface Area Percentage: 5.52% Raw Average Vertex Area (ROI Surface): 0.59023 mm^2 ...