Parameters controlling the behaviour of our model, and how these were obtained.

The top two rows are for the early visual system, and the remainder describe the disparity sensor. Parameters optimised by fitting to the data were constrained to lie between the stated bounds. The receptive field regions were squares, with the sizes se1, se2, si being the side-length. si is simply chosen to be very large compared to the stimulus. In our simulation, each pixel represents 0.154° visual angle. The sensor disparity is given both as a screen disparity αpref, and in parentheses as the corresponding distance Dpref.