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Sensation Unit slides

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Transcript

  • 1. Sensation & Perception unit m12-17
  • 2. m12 - Introduction to Sensation
  • 3. Psychophysics beginnings Top-down vs Bottom-Up Processing
  • 4. Absolute threshold Signal detection
  • 5. Absolute threshold Signal detection
  • 6. Stairway to Heaven “Yes there are two paths that you can go by, but in the long run there’s still time to change the road you’re on”
  • 7. Stairway to Heaven “Yes there are two paths that you can go by, but in the long run there’s still time to change the road you’re on”
  • 8. Stairway to Heaven “Oh here’s to my sweet Satan. The one whose little path would make me sad, whose power is Satan.”
  • 9. Stairway to Heaven “Oh here’s to my sweet Satan. The one whose little path would make me sad, whose power is Satan.”
  • 10. Another One Bites the Dust “Another one bites the dust Another one bites the dust Another one bites the dust”
  • 11. Another One Bites the Dust “Another one bites the dust Another one bites the dust Another one bites the dust”
  • 12. Another One Bites the Dust “It’s fun to smoke marijuana It’s fun to smoke marijuana It’s fun to smoke marijuana”
  • 13. Another One Bites the Dust “It’s fun to smoke marijuana It’s fun to smoke marijuana It’s fun to smoke marijuana”
  • 14. “subliminal” associations
  • 15. “subliminal” associations
  • 16. “subliminal” associations
  • 17. “subliminal” associations
  • 18. “subliminal” associations
  • 19. “subliminal” associations
  • 20. Difference threshold (Just noticeable difference) Weber’s Law Light must differ by 8% Weight by 2% Tone by 0.3%
  • 21. Sensory adaptation Sensory attention x Cocktail party effect
  • 22. What do you see?
  • 23. Who What do you see?
  • 24. Who What do you see?
  • 25. m13 - Vision
  • 26. Hue = wavelength Intensity = amplitude
  • 27. Normal Nearsighted Farsighted
  • 28. Ganglion Cell Activity
  • 29. Ganglion Cell Activity
  • 30. Ganglion Cell Activity
  • 31. Feature Detection Cells
  • 32. Visual Processing
  • 33. Visual Processing procedure
  • 34. What do you see?
  • 35. What do you see?
  • 36. What do you see?
  • 37. What do you see?
  • 38. What do you see?
  • 39. Color Vision Young-Helmholtz trichromatic theory additive color mixing
  • 40. Color Vision Opponent-Process Theory after-image effects . . .
  • 41. Color processing seems to occur in two stages: Retinal cones respond like Young- Helmholtz trichromatic theory Signal processed via opponent-process in the central nervous system
  • 42. Color Constancy
  • 43. m14 - Hearing
  • 44. Amplitude = volume Frequency = pitch
  • 45. Amplitude = volume Frequency = pitch
  • 46. Echolocation
  • 47. Place Theory Frequency Theory
  • 48. Conduction Hearing Loss Sensorineural Hearing Loss
  • 49. m15 - Other Senses
  • 50. Touch Pressure, warmth, cold, and pain Only pressure has identifiable sensory • neurons Pain is adaptive Hyperalgesia and Congenital Analgia • Phantom Limb Gate Control Theory
  • 51. Taste Sweet, sour, salty, bitter ... • and umami Super-tasters •
  • 52. Vestibular Sense vs Kinesthesis