3. Neuron

4. Neurons Purkinje cells from cerebellum, dendrites showing calcium concentration

5. Synaptic connection

6. Eye

7. Neural circuitry of the retina

8. Receptors Density - Fovea

9. Photoreceptors

11. CCD Well

12. Image Capture Huge dynamic range Photons: poisson process. Noisy at low levels For low light: large receptors, slow integration Rods/cones, local adaptation,change of amplitude and time constant, motion deblur

13. Visual receptor types

14. Spectral sensitivity

15. Color Mixing

16. Center-surround Receptive Fields Modified from PSY280F

17. LGN Layers

18. Physiological Recording

19. Orientation Selectivity

20. V1: Direction selectivity Modified from PSY280F

21. End-stopped cell

22. Simple Cells

26. Visual Areas

27. Bi-directional Computation

31. fMRI Magnet

32. fMRI Activation Slice

33. fMRI Activation