1. Visual Fields KW 8-20

2. Fovea on Cortex KW 8-22

3. Occipital Lobes are Independent KW 8-24

4. Visual Areas

5. Areas V1 – V5 KW 8-17

6. Visual Cortex

7. Figure 6.16 Receptive fields The receptive field of a receptor is simply the area of the visual field from which light strikes that receptor. For any other cell in the visual system, the receptive field is determined by which receptors connect to the cell in question. Receptive Fields

8. Neural Activity KW 8-25

9. Overlap in Receptive Fields KW 8-27

10. Simple Cells 1 KW 8-29 Hubel and Wiesel Nobel Prize Winners Mapping the Visual Cortex

11. Simple Cells 2 KW 8-29

12. Complex Cells KW 8-30

13. Neural Basis of Visual Perception The Cerebral Cortex: The Shape Pathway Hubel and Wiesel’s Cell Types in the Primary Visual Cortex Simple Cells Straight lines in particular orientation Complex Cells Straight lines in particular orientation in motion Hypercomplex cells Edge detector (edge in motion)

14. Hypercomlex Cell KW 8-31

15. Column Organization KW 8-34

16. Lesions in visual cortex KW 8-39

17. Dorsal and Ventral Streams KW 8-14 Where What

18. What and Where Cortical Areas

19. Neural Basis of Perception Disorders of Object Recognition Visual Agnosia- Inability to Recognize Objects Prosopagnosia- Inability to recognize faces Contralateral Neglect - neglect left side of visual world

20. Injury to the “What” Pathway KW 8-40

21. Temporal Columns KW 8-35

22. Monkey Face Cells

23. Mona Lisa Flip

24. Mona Lisa Pair

25. Raderscheit Self-portraits 2 mo 6 mo 3.5 mo 9 months after right parietal stroke Neglect

26. Left Visual Field Right Visual Left Brain Right Brain Neglect Example 1

27. Left Visual Field Right Visual Left Brain Right Brain Neglect Example 2

28. Left Visual Field Right Visual Left Brain Right Brain Neglect Example 3