Benjamin Otto Wrote:
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> I've been very pleased with the images from SUMA
> but I recently changed my significance threshold
> and one of my clusters is now below the surface
> from a sagittal perspective. Is there a way to set
> the coordinates in SUMA to view different slices
> or is SUMA strictly for surface mapping?

I assume you mean that with the new threshold the cluster is not intersecting with the surface anymore?

In my limited knowledge of SUMA there is no direct way to change how SUMA 'slices' the data (that is maps voxels to nodes) - it uses whatever is the Local Domain Parent (when using a the spec file) or takes whichever surfaces comes first (if starting from the command line).

To better control the mapping from voxels to nodes (e.g. get more data from the white matter) you could precompute the surface dataset using 3dVol2Surf, particularly with the -fp{1,n}_{mm,fr} options.

I must note that it is somewhat worrying if your cluster does not intersect with the surface. That could indicate bad coregistration, or that the cluster falls mostly in non-grey matter and thus might be an artifact.

best,
Nick