Hi Rigel, I suggest to use the low resolution subject-specific source models, which are part of the release data and are expressed in native space. They exist in a 4k and 8k vertex-per-hemisphere version. See page 92 of the S900 release manual.
Best wishes, Jan-Mathijs > On 15 Jan 2019, at 15:33, Rigel Wang > <rigel.w...@neuroinformatics-collaboratory.org > <mailto:rigel.w...@neuroinformatics-collaboratory.org>> wrote: > > Hi HCP team, > Thanks a lot for your dedication to science. > I am using your HCP-S900 dataset and Connectome Workbench for research. > Specifically, in order to compare the E/MEG inverse solution, we are > expecting to get the low resolution resting state fMRI on native space > surface. > We are trying to use HCP-S900 dataset for a test. > > For example, we want to downsample > the105923\MNINonLinear\Result\rfMRI_REST1_LR\rfMRI_REST1_LR_Atlas_hp2000_clean.dtseries.nii. > > First, I use the wb_coomand -surface-resample in matlab to downsample the > anatomical data( > system([wb_command, ' -surface-resample ',' ',file.highResSurface{hemi},' > ',file.highResSphere{hemi},' ',file.lowResSphere{hemi},' ', res_method,' > ',file.lowResSurface{hemi}]);)for getting a low resolution suface which > expecting to be around 3k vertices for each hemisphere. PS: downsampling the > surface and projecting back to native space is for calculating the E/MEG > leadfied. > > Then I am trying to use the wb_coomand -cifti-resample for downsample the > functional data( > system([wb_command, ' -cifti-resample ',' ',file.highResCii,' > ',res_src_direction,' ',cifti_templete,' ',res_template_direction,' > ',res_surface_method,' ', res_volume_method,' ',file.lowResCii]);) . > > Question: > 1. I don't know what should I put in the <cifti_templete> for wb_coomand > -cifti-resample? > > 2. Can I use the same project matrix from > \105923\MNINonLinear\fsaverage_LR32k\105923.R.{pial or > white}.32k_fs_LR.surf.gii file, which is 4*4 matrix, for projecting > low-resolution 3k_fs_LR back, the output of -surface-resample, to individual > native space? > > Thank you! > Best, > Rigel > > _______________________________________________ > HCP-Users mailing list > HCP-Users@humanconnectome.org <mailto:HCP-Users@humanconnectome.org> > http://lists.humanconnectome.org/mailman/listinfo/hcp-users > <http://lists.humanconnectome.org/mailman/listinfo/hcp-users> _______________________________________________ HCP-Users mailing list HCP-Users@humanconnectome.org http://lists.humanconnectome.org/mailman/listinfo/hcp-users
