Extended Data Figure 6. Performance of the simple-cell feedforward linear model.

(A,B) Responses of V2 cells to excluded grating stimuli of 8 different orientations predicted in the leave-one-out procedure by the two- layer odd and even models, respectively, versus responses measured experimentally. This plot shows data for all the V2 cells/pixels in eight injection cases. The mean correlation coefficients are 0.27+/−0.53 and 0.53±0.44, respectively. C) Averaged relative cross-validation error for each injection case, under the odd and even models. (D) Color-coded relative cross-validation error maps at the V2 injection site for case MK373-CTB647 under the odd (TOP) and even (BOTTOM) models. (E) Averaged absolute error in the model’s prediction of the preferred orientation (PO) of V2 cells/pixels under the odd and even models. (F) Color-coded maps of signed errors in PO calculated for each pixel at the V2 injection site in case MK373-CTB647 using the odd (TOP) and even (BOTTOM) models. (G) Averaged absolute error in the model’s prediction of the width of the tuning curves (HWHH) of V2 cells/pixels under the odd and even models. (H) Color-coded maps of signed errors in HWHH for V2 pixels in case MK373-CTB647 under the odd (TOP) and even (BOTTOM) models. Error bars: s.e.m.