Indeed the conversion from FreeSurfer annot format to GIFTI label format using FreeSurfer’s mris_convert does not preserve the probabilities (instead coloring every vertex with non-zero probability as a label). Really though, FreeSurfer only provides those labels on individual subjects as a convenience. If you want to compare the probabilistic areas in the HCP’s 32k_fs_LR space, you can use this file:
https://balsa.wustl.edu/file/show/n86p Sorry that this is all a bit confusing. It also doesn’t appear that we have released these probabilistic cytoarchitectonic maps in an especially obvious way in the BALSA database, so we can try to do this. Peace, Matt. From: <hcp-users-boun...@humanconnectome.org<mailto:hcp-users-boun...@humanconnectome.org>> on behalf of Salim Arslan <salim.ars...@yahoo.com<mailto:salim.ars...@yahoo.com>> Date: Wednesday, August 9, 2017 at 2:33 PM To: "hcp-users@humanconnectome.org<mailto:hcp-users@humanconnectome.org>" <hcp-users@humanconnectome.org<mailto:hcp-users@humanconnectome.org>> Subject: [SPAM] [HCP-Users] Brodmann area maps Dear all, Could you provide a precise description on how the Brodmann area maps provided with the structural data (label files titled e.g. 100307.L.BA.32k_fs_LR.label.gii) are obtained? I am currently working on the HCP500 release. My understanding is that they are obtained from freesurfer's recon-all command, however this should provide probabilistic maps (according to https://surfer.nmr.mgh.harvard.edu/fswiki/BrodmannAreaMaps) and not the hard labels that we are given. I have been looking through the HCP documentation and publications and could not find a precise explanation. Any help would be greatly appreciated. Best wishes, Salim _______________________________________________ HCP-Users mailing list HCP-Users@humanconnectome.org<mailto:HCP-Users@humanconnectome.org> http://lists.humanconnectome.org/mailman/listinfo/hcp-users _______________________________________________ HCP-Users mailing list HCP-Users@humanconnectome.org http://lists.humanconnectome.org/mailman/listinfo/hcp-users
