p352fig09.26 The final stage of the model computes a beautiful expansion optic flow that permits an easy estimate of the heading direction, with an accuracy that matches that of human navigators.<BR>||  The model generates accurate heading (Warren, Hannon 1990; Royden, Crowell, Banks 1994). Maximally active MSTd cell = heading estimate.  Accuracy matches human data.  Random dots [mean +-1.5°, worst +-3.8°], Random dots with rotation [accurate with rotations <1°/s, rotation increases, error decreases], OpenGL & Yosemite benchmark +-1.5°, Driving video +-3°.