Figure 13.

Example predictions and responses to counterphase stimuli, following the style of Figure 12. A, K-on/off cell (17.3° eccentricity). B, M on cell (9.4° eccentricity). C, P off cell (8.5° eccentricity). D–F, Predicted and measured responses to counterphase stimulation across spatial phases corresponding to A–C. The K-on/off cell is insensitive to the spatial phase of the stimulus. Scale bars, 20 imp/s. G–I, Predicted and measured spatial frequency tuning curves for the cells shown in A–C. The spatial frequency of the counterphase gratings are indicated by arrows.