Hi Viola,

there's some detailed info if you run mri_glmfit-sim --help mri_glmfit --help

mri_glmfit-sim runs mri_glmfit.

When you use mri_glmfit-sim with the --cache option, it uses simulations that are based on 10,000 iterations.

Here are some slides that give more detail http://surfer.nmr.mgh.harvard.edu/pub/docs/freesurfer.groupanalysis.ppt

Here's the paper we reference ftp://surfer.nmr.mgh.harvard.edu/transfer/outgoing/flat/greve/hayasaka.2003.ni.1014.clustersize.pdf

doug

Oertel, Viola wrote:

Dear Freesurfers, could you please give me detailed information about the Bonferroni or clusterwise correction we can do in Freesurfer? How much iterations? Is that cluster- oder voxelwise? Is there anywhere a detailed description about the correction options? Best regards, Viola _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer