Re: [Freesurfer] Defining cluster threshold

Hi Heidi, I'm not sure what you are asking for. Do you want to find a p-value for the cluster you have found in your TBSS analysis? If so, you can use mri_glmfit-sim to perform a simulation (monte carlo or permutation).

doug

Jacobs H (NP) wrote:

Hi FreeSurfers,

I have done my DTI analyses (dt_recon with TBSS) and the statistical analyses in FreeSurfer. Now I have defined the clustersize with mri_volcluster, but I find this rather arbitrary. Is there a way to calculate a minimum size cluster threshold (by using for example a Monte Carlo simulation)?

Thanks! Heidi

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