p293fig08.04 Most local motion signals on a moving object (red arrows) may not point in the direction of the object's real motion (green arrows).  This problem besets every neuron due to the fact that it receives signals only in a space-limited aperture.<BR>||  Most motion signals may not point in an object's direction of motion. Aperture problem.  EVERY neuron's receptive field experiences an aperture problem.  How doe the brain use the small number of [correct, unambiguous] motion signals to compute an object's motion direction?