Dear FreeSurfer Team, I have questions about the sulcal depth.
1) I heard that the output/surf/?h.sulc is showing the sulcal depth. Is it correct that the sulcal depth measure unit is normalized z-score, mm? And is it correct that the (-) values of sulcal depth mean gyral region (green), and (+) values mean sulcal region (red)? 2) I wonder if ?h.sulc is based on white matter surface or pial matter surface. 3) I analyzed the sulcal depth by vertex-level. if the results include the sulc (-) values region, Is it meaning that the gyral height? 4) I wonder the method/commands for extracting the sulc value by label-level. 5) Could you let me know the recommended smoothing option if it possible? (e.g. --fwhm-trg [N]) I appreciate your help. Thank you. Han Byul Cho
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