Dear afni experts,

I'm using AFNI/FreeSurfer/SUMA tool chain, and CoSMoMVPA matlab package to do surface-based MVPA, and encountered a few problems. Any help would be highly appreciated.

1) According to the CoSMoMVPA demo, its surface-based searchlight routine seems to require merged hemisphere (mh, as opposed to lh+rh) format of the FS surface (in *.asc file). However, @SUMA_Make_Spec_FS generates separated (lh+rh) files. I used the following pseudo matlab code to merge the two:
[left_verts, left_faces] = read_asc('lh.asc');
[right_verts, right_faces] = read_asc('rh.asc');
right_faces(:,1:3) = right_faces(:,1:3) + size(left_verts,1);
write_asc('mh.asc', [left_verts; right_verts], [left_faces; right_faces]);
It seemed to work (but is it the correct way to do this?). But when I visualize the merged surfaces, I realized that the spatial location of the vertices from the two hemispheres in volumetric space are overlaped. Is that OK? Specifically, will that affect neighborhood definition or multiple comparison correction?

2) After I got the surface-based searchlight result with CoSMoMVPA in a *.niml.dset file, which contains the results for both hemispheres, I tried to load and visualize it with SUMA. However, with SUMA object controller, I could load the dset onto only one of the two hemispheres (either left or right, but not both). When I loaded the same dset to the second hemisphere, SUMA complained and failed.
Is there a way to visualize merged hemisphere dset with SUMA?

Thanks~
Chencan