Fig. 8.
Effect of contrast on aperture tuning in LGN.A–C, The sDOG model was fit to the responses at low (open circles) and high (filled circles) contrast for a PC cell (A), MC cell (B), and KC cell (C).Insets show contrast–response curves for each neuron.Arrows indicate the contrasts used. Fit parameters (re,ri): A, low contrast (50%), 0.38, 0.58, high contrast (75%), 0.26, 1.52; B, low contrast (10%), 1.1, 1.13, high contrast (20%), 0.47, 2.19, C, low contrast (50%), 0.96, 1.08, high contrast (98%); 0.84, 0.87.