What is the easiest way to create overlays with activations in red/yellow and deactivations in blue/green? For example, the image on the bottom left of the main FEAT page http://www.fmrib.ox.ac.uk/fsl/feat5/index.html
I've been using FSL for instructional purposes, and someone asked me, but I can't find the answer to this probably simple and obvious question anywhere in the documentation or mailing list archives.
keith
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