Answer
Rods and cones are cells that tranduce light energy into receptor potentials through the agency of a photopigment embedded in their outer segments. The receptor potentials release neurotransmitters at synapses between bipolar and horizontal cells.
Work Step by Step
Transduction is the transformation of one form of energy into another. Receptor cells can transform light, sound, heat, vibration and touch into potential nerve stimuli. In the eyes, light that impinges on receptor cells (rods and cones) hyperpolarizes these receptors. The result in rod or cone is a reaction between opsin and transducin, and the generation of a potential. or nerve stimulus.