부산대학교 도서관

Photoreceptor phosphodiesterase (PDE6): activation and inactivation mechanisms during visual transduction in rods and cones. The existence and the physiological role of cone-cone, rod-cone, and rod-rod communication is presented in the review by Cangiano and Asteriti [[3]] together with a possibly ancestral form of coupling among ciliary photoreceptors. Clearly visible are the outer nuclear layer (2), the outer plexiform layer (3), the inner nuclear layer (4), a further "granular layer", probably the inner plexiform layer (5), the ganglion cell layer (6, "nerve cell layer"), and the optic nerve fiber layer (7) (b). Cone photoreceptors provide the foundation of most of the photopic-based human visual experience, although the differences between rod and cones across the species and throughout the evolution do not appear as strong as in mammalian retina. [Extracted from the article]