Figure 3. Systematic maps of curvature degree.
(A) Maps of different curvature degrees. Each map is one curvature minus average of all straight gratings (Case 1). 1–6 and 7–12: upwards and downwards curvatures, respectively, from low to high curvature preference, 13: straight grating. Red dotted square marks the region that is further analyzed in Figure 7A,B. Correlation values for pairs of curvature response maps (from A). Color bar: high (red) to low (blue) correlation values. (C) The more similar the curvature the greater the correlation value. X axis: curvature degree difference. Y axis: correlation value. Color symbols: correlation value for each curvature above with respect to its curvature degree distances (each fit with matching color line; regression values are shown on the right). The fitted lines are not meant to indicate linear fits; rather, they help to see the trends. Scale bar, 1 mm.