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Exploring Vision and Perception in Psychology

Discover the intricacies of how our visual system constructs our reality and influences perception in this engaging introduction to psychology lecture. Gain insights into visual pathways, color opponency, adaptation, and more through interactive demos and discussions. Explore topics like face adaptation, illusions, expectations' impact on visual processing, change blindness, and attention guidance. Challenge your perception and memory with engaging activities that delve into the fascinating world of visual cognition.

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Exploring Vision and Perception in Psychology

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Presentation Transcript

  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 05-04 World Retina LGN V1 “What” “Where” W. W. Norton

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

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

  8. Basic Visual Pathway 05-04 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. 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 ChangesAutomatic Role of context

  22. Cornsweet illusion: changes in luminance http://images.google.com/imgres?imgurl=http://www.michaelbach.de/ot/lum_cobc/icon.gif&imgrefurl=http://www.michaelbach.de/ot/lum_cobc/index.html&h=64&w=64&sz=4&hl=en&start=19&tbnid=nKhz5dMwBFw7IM:&tbnh=64&tbnw=64&prev=/images%3Fq%3Dcornsweet%2Billusion%26svnum%3D10%26hl%3Den%26client%3Dfirefox-a%26rls%3Dorg.mozilla:en-US:official%26sa%3DN

  23. Sensitivity to context

  24. Kaniza triangle

  25. phi

  26. phi

  27. bistable phi

  28. bistable phi

  29. Expectations and beliefs influence visual processing

  30. A stimulus in context 2 A B C 4

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

  32. Bio motion(Gestalt, or expectations?) • http://www.biomotionlab.ca/Demos/BMLwalker.html

  33. Change blindness

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

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

  36. +

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

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

  39. Boundary Effect Background Intraub and Richardson (1989) Intraub and Bodamer (1993) Intraub (2002) Bertamini (2005)

  40. tenuous perception and representation of our world?

  41. Attention

  42. Visual Search Search for the red vertical

  43. Pretty easy. Search for the red vertical again

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

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