You have a couple of choices -- so long as the overlays are registered with the anatomy. The easiest way if the number of lesions is small you can create an overlay in BrainRegister (Load anatomy on left, lesions on right and use "Registration->Create Overlay" to merge the overlays on the anatomy (Set the lower threshold to 1). Then save this overlay image (.nii) and load it into the electrode editor (You will need to change the colormap to see the colors (most likely press "F2" on the bottom right corner of the viewer). If that does not work let me know and we can try some other tricks here. [ Another option is to convert your lesions to surfaces -- load the lesion image in any viewer and then use Features/Surface Control/Extract Objectmap to create a surface mesh for the labeled lesions. Save this (Surface control) as a .vtk file and then load it into the electrode viewer's surface control and display at the same time as the electrodes.

Thank you very much. The first option is working for me.