Fig. 3

Inverse linear magnification factor as a function of eccentricity θ along different meridians (horizontal meridian (HM) 0^∘: blue; 30^∘: cyan; 60^∘: green; vertical meridian (VM) 90^∘: red, see inset). Solid lines are on the flat model, dashed on the curved model of V1. M has an inverse linear dependence on retinal eccentricity θ only along the neural representation of HM on the flat model of V1 (solid blue line). While on the flat model of V1, M increases with azimuthal distance at constant eccentricity (solid lines). This meridional asymmetry is reversed on the curved model of V1 (dashed lines). In particular meridians close to HM gain cortical surface on the 3D model of V1