1. 9.00 Introduction to Psychology
What do you see?
… When you see it, KEEP IT TO YOURSELF!
Talia Konkle
1 Mar 07

2. Pop Quiz

3. The Plan for today : Review: Vision :15 :35 Discussion: DEMOS! :50
Logistics:
Turn in Papers
Peer Editing Guidelines
Timekeeper?

4. Visual Themes our sense of the world is “constructed” from the input
processing of the world is highly dependent on our visual experience

5. Basic Visual Pathway World Retina LGN V1 “What” “Where” W. W. Norton
05-04
Basic Visual Pathway
World
Retina
LGN V1
“What”
“Where”
W. W. Norton

6. Retina light rods and cones bipolar cells ganglion cells parvo magno
(optic nerve)
blindspot
magno

7. Basic Visual Pathway World Retina LGN V1 “What” “Where” W. W. Norton
05-04
Basic Visual Pathway
World
Retina
LGN V1
“What”
“Where”
W. W. Norton

8. Basic Visual Pathway World Retina LGN V1 “What” “Where” W. W. Norton
05-04
Basic Visual Pathway
World
Retina
LGN V1
“What”
“Where”
W. W. Norton

9. “What vs Where”
Where V1
What

10. Receptive Field
neuron in V1
visual field
Retinotopy

11. AGNOSIAS
Associative
Apperceptive

12. other questions about the lectures?

13. Now show me what it all does!
That’s good and all…
Now show me what it all does!

14. Color opponency, receptor adaptation

15. Color opponency, receptor adaptation

16. The visual system adjusts itself.
In time.
In space.
Why does it adjust?
sensitivity and gain?
neural fatigue?
adjustment of priors? (effects in the opposite direction)
Error correction?

17. Simultaneous [blur] contrast (adjustment in space)

18. Face adaptation (adjustment in time)
split class in half for demo…

19. Face adaptation (adjustment in time)

20. Face adaptation (adjustment in time)

21. Sensitivity to Changes Automatic Role of context

22. Cornsweet illusion: changes in luminance

23. Sensitivity to context

25. Kaniza triangle

26. phi

27. phi

28. bistable phi

29. bistable phi

30. Expectations and beliefs influence visual processing

31. A stimulus in context 2
A B C 4

32. Only reasonable 3D interpretations come to mind….

35. Bio motion (Gestalt, or expectations?)

36. Change blindness

37. What does this say about our perception and memory of the world?

38. Get Ready… I’m going to show you a picture
and I want you to remember it!
(you’ll have 3 seconds)

39. +

40. Which One Did You See? A B C D

41. Which One Did You See?
correct answer A B C D
too close
too far

42. Boundary Effect Background
Boundary extension is the tendency to remember close up scenes as if they extend beyond the boundaries of the scene presented
This is classically interpretated as a mechanism which will help integrate the visual scene over sucessive views (fixations, head turns, etc).
Intraub and Richardson (1989)
Intraub and Bodamer (1993)
Intraub (2002)
Bertamini (2005)

43. tenuous perception and representation of our world?

44. Attention

45. Search for the red vertical
Visual Search
Search for the red vertical

47. Search for the red vertical
Pretty easy.
Search for the red vertical
again

49. Harder? Guiding attention by color… pretty easy
Guiding attention by color AND orientation, more difficult
one more time, find the red vertical

51. How do we explain this? feature maps

52. Multiple object tracking
Spotlight metaphor of attention.
Can you split it?
demos

53. Is the minds eye different than the real eye?
A little on mental imagery

54. Insights from the Clinical Neuropsychology
Hemispatial neglect extends to mental imagery
Bisiach and Luzzati (1978)

55. Removal of Primary Visual Cortex leads to…
Reduced visual angle of mental imagery workspace
(Farah 2000)

56. Imagery and Skill Learning
Feltz and Landers, 1983
Meta-analysis of imagery studies in performance benefit
Generally accepted that visualization helps performance, (but not as much as actual practice)
though…
Putting Imagery: (Tayler and Shaw, 2002)
golfers imagine made or missed puts
missed-putt imagers did worse than no imagery at all!
Since then there’s been a hunt for the underlying neural mechanisms …

57. a little on visual substitution systems
can we use our other modalities to see?

58. tvss
avss

59. Logistica swap papers (write email address on it!)
2. handout peer edit guideliens
DUE BY
MONDAY 10pm

60. Extra slides

61. CSF

62. Change blindness.

63. Change blindness.

64. Change blindness.