The vertebrate retina inverts the logic of phototransduction…
The vertebrate retina inverts the logic of phototransduction, with light hyperpolarizing photoreceptors rather than depolarizing them. Discuss the functional advantages of this arrangement. How does the interplay between phototransduction cascades, retinal circuitry (ON/OFF bipolar pathways), and center–surround receptive-field organization optimize contrast detection and signal-to-noise ratio under varying illumination conditions? In your analysis, consider both cellular biophysics and systems-level implications for visual acuity and adaptation.