Re: [Freesurfer] mri_volcluster problems

2014-10-21 Thread Douglas N Greve
It is more straightforward if you use -log10(p). If you want to do an unsigned test, then run it twice, once with pos and once with neg, then multiply the resulting cluster-wise p-values by 2. doug On 10/21/2014 02:11 AM, Joo Tan wrote: > > Hi > > > I have a few questions regarding the use of “

[Freesurfer] mri_volcluster problems

2014-10-20 Thread Joo Tan
Hi I have a few questions regarding the use of “mri_volcluster” for clusterwise thresholding. Essentially, we have a volume of pvalues obtained from a two tailed t-test comparing beta values from condition A vs condition B. When I ran this command: mri_volcluster --in transformedP.nii --sum