Hello AFNI friends
I am very confused with a result that I had from 3dttest++. According to the CSimA.NN3_bisided.1D table, I set the voxel the in the GUI to 0.05, the minimal cluster size should be >22925 voxels to be significant , which corresponds to p < 0.05 corrected, so I click in clusterize change the NN3 and set the cluster size to 22925 and nothing survived …BUT if I change the voxel thr in the GUI to 0.01, and according to the same table the cluster size should be >511 voxels to be significant, so I click in clusterize and set the new cluster size to 511, NN3 then I have a cluster that is surviving this threshold that is more stringent than 0.05.
this make sense???
Here is the 3dttest++ command that I am running
3dttest++ -mask AFNI_GCmask_MNI152_2009_resample.nii
xxx (more subjects)