Broca-Sulzer Effect by Dev1 | Sep 8, 2023 | Bookmarking Post, PERCEPTUAL VISION | 0 comments Bookmark Please login to bookmarkClosePlease login Flashes for a duration of 50-100 ms (which is above our threshold) are perceived asbeing brighter than shorter or longer flash durations. This is associated withproviding our photoreceptors with optimal visual variance.