afni.nimh.nih.gov

Sorry, let me be more specific:

I take the inverse (zeros become 1s; 1s become 0) of M v. baseline thresholded at p = 0.01, (or p = 0.005), and exclude those voxels in 3dLME or 3dANOVA by specifying this inverse mask with the line "-mask inverseM+orig."