p314fig08.34 The VISTARS model for visually-based spatial navigation.  It uses the Motion BCS as a front end and feeds it output signals into two computationally complementary cortical processing streams for computing optic flow and target tracking information.<BR>||  VISTARS navigation model (Browning, Grossberg, Mingolia 2009). Use FORMOTION model as front end for higher level navigational circuits: input natural image sequences -> estimate heading (MT+)-MSTd -> additive processing -> estimate object position (MT-)-MSTv direction and speed subtractive processing -> Complementary Computing.  [optic flow navigation, object tracking]