Fig. 1

Modifications. An exemplary stimulus picture (“Berries”) is depicted in its original version at 90% color saturation (ORIGINAL) as well as with one of three modification masks, i.e. STATIC (90–60% left–right gradient of color saturation), GC-LOW (90–60% static gradient of color saturation + dynamic GC mask continuously reducing the contrast on the right of current gaze position), GC-HIGH (100–50% left–right gradient of color saturation + the dynamic GC mask)