1. 1 RETINA n Review its structure and function

2. 2 TRANSDUCTION n Mechanism:dark current->light response n Amplification n Adaptation/recovery n Transmission. Polarized epithelium

3. 3 MONOCHROMATICS VS. "COLOR" VISION n Receptor types:R vs. C n Sensitivity n Density

4. 4 THE RESPONSE OF BIPOLAR CELLS n Visual field:antagonistic Center/Surround n Cell types (ON/OFF) n Outer plexiform layer processing n "Contrast" enhancement

5. 5 GANGLION CELLS n Categorizations

6. 6 M/P (inferences), ON/OFF n Retinal Output n Inner plexiform processing n Color antagonism

7. 7 SUMMARY n Input (light) converted to a new code

8. 8 Parallel processing

9. 9 Early divergence of information

10. 10 CENTRAL CNS

11. 11 PROJECTION n Nerve n Chiasm n Tract n Retinotopy (sensory maps)

12. 12 TARGETS OF TRACT n LGN n Midbrain n S. Colliculus

13. 13 LGN n Organization

14. 14 Retinotopy n Neighboring LGN cells respond to neighboring Ganglion cells which have neighboring receptor fields

15. 15 Non retinal input n Majority of synapse in LGN are not of retinal origin