Figure 4: Concentric orientation preferences.

(a) Retinotopic map of one example mouse captured by wide-field calcium imaging. The area inside the computed convex hull of the centre responses for all monitor patches is highlighted and used in the following analyses. (b,c) The retinotopic map of a recomputed in azimuth and elevation coordinates, respectively. (d) Map of the concentric angle (that is, the angle orthogonal to the radial angle for the centre of vision) reconstructed based on b and c. (e) The corresponding imaged orientation map. (f) Preferred orientation of the pixels of orientation maps versus the concentric angles computed from the retinotopy for all mice (n=7). (g) Histogram of angular difference between preferred orientation and computed concentric angles of the pixels (7 mice). (h) Preferred orientation of penetrations (n=21, 3 mice), obtained by extracellular recordings, shown at the corresponding receptive field positions. Different colours indicate different mice. (i) Concentric angles at receptive fields relative to the nose versus the corresponding preferred orientations based on the data shown in h. Different colours indicate different mice. (j) Histogram of angular difference between preferred orientation and concentric angles of units shown in h and i.