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Hi - I am a new FSL user, converting over from using SPM99 many years ago. I was wondering if there's a way to 3D render the thresh_zstat from one of my higher level analyses to a structural image (e.g., bg_image). I tried opening bg_image in FSLview, then adding the zstat file, and using 3D Viewer. But that gave me a solid brain with no gyral/sulcal anatomy, and no activation blobs. I tried changing the opacity of the structural brain, to find that showed me the opposite side of the brain, rather than internal anatomy (and still no functional activation). I am trying to create an image similar to SPM, with activation rendered on the surface of the brain. I would appreciate any help I can get. Thank you!