Dear Anton,

Many thanks for your quick reply. I'm using MacOS High Sierra v10.13.2 and SDM v5.141.
Are the overlays concatenations of the peak files? (Ie. would MyMean_z_p_0.00500_1.000_10_p.nii.gz be equivalent to each of the mask_MyMean_z_p_0.00500_1.000_10_peak1.nii.gz files being loaded?) I'm just trying to clarify what the other nifty files show. Also, I just wanted to confirm that MyMean_z_p_0.00500_1.000_10_p.nii.gz (and neg) are already thresholded, or is any more correction/thresholding required?

Thanks again,
Colleen