I have been editing my MRI images using the recon edit tool. I have been editing the white matter so it does not include grey matter. When I click shift to remove the extra voxels included in white matter they are removed, which is what supposed to happen. Where I’m encountering a problem is sometimes I’ll have clicked the shift but are not holding the mouse down so it seems as if the entire image gets selected. I’ve attached a screenshot. I don’t know how to reverse this. It then will have all the images selected.