1. SENSING

2. Understanding sensory-motor integration

3. ORGANIZATION OF SENSORY SYSTEMS
Sensori-motor integration
External senses
Localize/Detect and monitor change
Tuned…sense modes
Less sensitive to unchanging stimuli

4. The Visual System

5. Tracing the ccts of vision

6. The organ of vision

7. The eye is like an SLR camera

9. Like a camera
Lens
Iris
photoreceptors

10. The lens

11. Like a camera
Upside-down and inverted

12. Control of eye movement also critical

13. Eye movement
Pursuit/tracking
Saccades
vergence

14. Sensitivity and Limitations of the visual system

15. The Iris
Controls light exposure

16. Visual field and retino-topic organization

17. The retina-photoreceptive tissue

18. More on the retina

22. Receptive fields and Coding
RODS- dark/low illumination
sensitive to movement
peripheral vision
CONES- High illumination
sensitive to color
foveal vision

23. ROD CONE DISTRIBUTION

24. FOVEA

25. FOVEA and optic disc/blind spot

26. Coding in cones

29. Foveal acuity

30. NOTE:
Light passes through ganglion cell layer, and bipolar cell layer before striking photoreceptors ( light transparent).
Activation of photoreceptor activats cct in reverse direction.

31. Sensory convergence

32. Retina ganglion cell axons coalesce

33. …and leave eye chamber to form the optic nerve

34. From retina to cortex

35. Partial decussation at optic chiasm
Decussation-crossing over
Not as simple as left and right eye
Decussation of visual field info

51. VENTRAL STREAM Object Recognition Visual agnosias Prosopagnosia
anosagnosia

53. Dorsal Sream- WHERE/ CONTEXT/SPACE Balints Movement agnosia
Visual Sensory neglect

54. Visual hemilateral neglect

58. Hearing
Sound
The Structure of Ear
The Pathway from Ear to Cortex
The Neural Coding of Sound

59. Pitch
Loudness
Location
Feature Detection
How Does Our Auditory System Develop?
Taste and Smell: A Briefer Look
Taste
Smell