Dear freesurfer experts, I have .sig maps of cortical thickness, curvature and sulcal depth measures from my dataset (two groups: patient, control). I have the following questions:
1) I want to overlay all three maps simultaneously on an average subject created from all subjects' brains, with different color maps. Which command will do this? 2) Register all ?h.thickness datasets to mni152 instead of mni305/fsaveage, convert the files to .mnc/.obj format, and read in Matlab. In this step, do I have to convert the native ras coordinates too? If I want to use bbregister for this step, can you specify the commandline to do this? 3) I want to compute vertexwise expansion/contraction for local surface area, by a) calculating total surface area of all faces connected to a vertex, and then multiplying it with corresponding curv and sulc of that vertex, and b) comparing the result in 3a) with the warpfield from the registration form step 2) above. Or is there something I am missing here? Also, for 3a) how do I get the correct set of triangles for each vertex? Thanks in advance, Shantanu -- Shantanu Ghosh, Ph.D. Harvard Medical School & Massachusetts General Hospital Martinos Center for Biomedical Imaging _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer The information in this e-mail is intended only for the person to whom it is addressed. If you believe this e-mail was sent to you in error and the e-mail contains patient information, please contact the Partners Compliance HelpLine at http://www.partners.org/complianceline . If the e-mail was sent to you in error but does not contain patient information, please contact the sender and properly dispose of the e-mail.
