Thanks you, the plugin was good advice. I had seen advice about it elsewhere on the message board, but I am so new to AFNI that I had no clue where to even find the plugins.

I basically have exactly what I want now, just one trivial question. In the object controller of SUMA, is there a way to adjust the intensity scale so that it only displays a positive range as you can do in the AFNI overlay control? I would like to display only 0-8, but every time I adjust the lower threshold of "I," the upper threshold adjusts to the same number but positive.

E.g. I change the lower threshold to zero and the upper threshold automatically changes to 0. I change it to -1 and the upper threshold updates to 1. And so on.

I'm sure it's a quick fix, I just couldn't find anything specifically about it in the object control manual.

Thanks so much for your help!