Hi Tim, Thank you very much for your detailed explanation
Regards, Claude On it-Tnejn, 02 ta Lul, 2018 07:35 , Timothy Coalson wrote: On Mon, Jul 2, 2018 at 7:13 AM, Claude Bajada <[email protected]<mailto:[email protected]>> wrote: 2) from what I understand, structural qualities such as cortical thickness etc are measured in the individual's real space. However then, what I do not understand is the file structure of the HCP data. The structural measures such as cortical thickness, curvature and myelin maps etc live in the MNINonLinear/fsaverage_LR32k rather than in the 'native space' directory. Can anyone shed light on this? It was perhaps not the best choice to put these measures inside the MNINonLinear folder, but for compatibility, that is where they will remain for now. They were computed in "T1w" space ("native volume space", not to be confused with "native mesh", which is an unrelated distinction). However, the myelin measure is based on a combination of imaging contrasts, and is not sensitive to changes in brain size, so it doesn't quite fit in the same class as curvature and thickness, which are measures of the cortical coordinates themselves. Tim ------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------ Forschungszentrum Juelich GmbH 52425 Juelich Sitz der Gesellschaft: Juelich Eingetragen im Handelsregister des Amtsgerichts Dueren Nr. HR B 3498 Vorsitzender des Aufsichtsrats: MinDir Dr. Karl Eugen Huthmacher Geschaeftsfuehrung: Prof. Dr.-Ing. Wolfgang Marquardt (Vorsitzender), Karsten Beneke (stellv. Vorsitzender), Prof. Dr.-Ing. Harald Bolt, Prof. Dr. Sebastian M. Schmidt ------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------ _______________________________________________ HCP-Users mailing list [email protected] http://lists.humanconnectome.org/mailman/listinfo/hcp-users
