Hello FSL experts,

I need to run some fMRI analyses that show DEactivation in an ROI for a given contrast (e.g., HappyFaces>NeutralFaces). Put simply, a collaborator wants to know if HappyFaces 'shut-down'  or inhibit a given brain area. I know how to show activation, but not DEactivation. How would I go about doing this in Feat/FSLView? Would it just be looking at the contrast's inverse (i.e., SadFaces>HappyFaces)?

Thanks in advance,
Dave