afni.nimh.nih.gov

Hi, Mengxing-

Well, you can use 3dClusterize to threshold more easily than with 3dmerge/3dclust, probably:
[afni.nimh.nih.gov]
There, you can use either voxelwise p or statistic value, along with cluster volume. For a code example using it on an actual dataset with 3dClustSim and , you can see here:
[afni.nimh.nih.gov]

I haven't looked at using this *specifically* with 3dFDR output or whatever you are using, but it should be an easier place to start than 3dclust/3dmerge.

--pt