Abstract
At oblique illuminations of the retina cone ERP is maximal when light is polarized in the plane of the disks. Rod ERP is maximal when light is polarized along the photoreceptor axis, perpendicular to the disk plane. This means that the cone ERP is generated by the disks, and that the rods generate ERP due to the absorption of light by the rhodopsin molecules enclosed within the envelope membrane of the outer segment. Both the b-wave of electroretinogram and rod late receptor potential are generated due to the absorption of light by the disk membranes. There is no sign of the electrical coupling between the rod disks and the outer plasmic membrane, and physiological response is transmitted to this membrane from the site of photon absorption by means of some non-electrical process.
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