volcluster is only used for volume-based (ie, 3D) analysis, eg, an fMRI analysis of subcortical structures. surfcluster is used for surfaces doug

On 8/28/14 4:33 AM, Katharina Zech wrote:

Dear all,

I run the surfcluster analysis (mri_surfcluster). But the tutorial tells me that there exists also mri_volcluster:

Using the outputs from the estimation step and the simulations, mri_surfcluster (or *mri_volcluster*) will create two outputs: the summary file with a table of the clusters it found, and an output surface map of the clusters wth the cluster-wise p-value. The sample mri_surfcluster command is:

mri_surfcluster --src lh.gender_age.glmdir/age/sig.mgh \ --csd lh.gender_age.glmdir/csd1-age.csd \ --csd lh.gender_age.glmdir/csd2-age.csd \ --sum lh.gender_age.glmdir/age/sig.cluster.sum \ --ocp lh.gender_age.glmdir/age/sig.cluster.mgh

Could you please tell me the difference betweensurfcluster and volcluster? How do I have to change the preprocessing steps mris_preproc, smoothing (surf2surf), mdi_glmfit and the simulation to get volcluster instead of surfcluster?

Thanks in advance!

Katharina

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