Hello, I am trying to define a neighborhood structure for vertices in the cortical surface used in the fMRISurface pipeline. My understanding is that the minimally preprocessed subject data are spatially matched to the 32k Conte69 midthickness surface. I would like to use the same distance structure that was used in the preprocessing pipeline as described in Glasser et al (2013) p.121 paragraph two. Does a 32k x 32k matrix (or 29k x 29k excluding medial wall) of distances between neighboring vertices already exist (e.g., sparse matrix with distances for vertices within 3 sigma defined using a 2mm FWHM Gaussian kernel)? If not, is the best way to generate such a matrix by looping through the vertices and using the wb_command -surface-vertex-areas with limit set to 3*0.8493 or similar?
On a separate note, I am also interested in the "vertex areas" used in the pre-processing pipeline. Does the command below reproduce these areas? wb_command -surface-vertex-areas Conte69.R.midthickness.32k_fs_LR.surf.gii myfile.gii Many thanks! Ben Risk Graduate Student Department of Statistical Science Cornell University _______________________________________________ HCP-Users mailing list [email protected] http://lists.humanconnectome.org/mailman/listinfo/hcp-users
