p301fig08.16 The sum of the waning Gaussian activity profile due to the first flash and the waxing Gaussian activity profile due to the second flash has a maximum that moves like a travelling wave from the first to the second flash.<BR>||  Travelling wave (G-wave): long-range motion.  If the Gaussian activity profiles of two flashes overlap sufficiently in space and time, then the sum of Gaussians produced by the waning of the first flash added to the Gaussian produced by the waxing of the second flash, can produce a single-peaked travelling wave from the position of the first flash to that of the second flash.  The wave is then processed through a WTA choice network (Winner Take All).  The resulting continuous motion percept is both long-range and sharp.