Summed response from a pair of ON and OFF LGN cells (redrawn from Chariker et al., 2021). A, ON-OFF pair separated by do, with ON to the right of OFF; the circles represent 1 SD of the center Gaussian of each LGN receptive field. B, Relative to the OFF-kernel (black), the ON-kernel (white) has a 10-ms delay and is of type (1.6, 0.7; see Results, DSV1 model description). C, Right versus left responses (summed ON and OFF currents) as functions of TF, at SF = 2.5 c/d.