1. Sensation and Perception
Chapter 5

2. Sensation v. Perception
Brain (physical organ)
Mind ( )

3. Absolute Thresholds Do you think you could sense:
A of perfume in a 3 room apartment?

4. Absolute Threshold
Subliminal Stimulation

5. Just Noticeable Difference
Difference Threshold
Described by
Light must vary by %
must vary by %
Sound must vary by %

6. Sensory Adaptation
Increases sensitivity to most important information

7. How It Works: Vision Light enters the Light then passes through the
Passes through the pupil/iris
Light then passes through the
Finally falls on the

8. How It Works: Vision
Retina detects
Brightness/Intensity
Motion

9. Notes

10. How It Works: Vision
Blind Spot
Rods / Cones

11. How It Works: Vision
Hubel / Weisel
– Facial Perception

12. Notes

13. How It Works: Vision
Processing
Milner’s Study

14. How It Works: Vision
Color Vision

15. How It Works: Vision Theory Hering – Theory
Does not fully explain color vision
Hering – Theory

16. How It Works: Hearing
Outer Ear
Middle Ear
Inner Ear

17. How It Works: Touch
Pain
Phantom Limb

18. Pain Locatable area of the brain that ‘senses’ pain Theory
Shows similar response to
Theory
Memory of Pain

19. Pain Control Psychological Controls Physical Controls
Placebo (no drug)
Exercise
Thought Distraction
Drugs
Massage
Acupuncture
Surgery

20. Taste
Attraction/Avoidance
Have basic tastes

21. Notes

22. Scent
Sense of smell of all
likely to trigger memory

23. Ability to determine movement/location of limb/joint
Works with other senses to determine bodies position in space

24. Vestibular Sense
Inner ear
Responsible for location of

25. Notes

26. Notes

27. Notes

28. Notes

29. Notes

30. Notes

31. Notes

32. Depth Perception Visual Cliff Two Ways to Depth Perception
Monocular Cues
Binocular Cues

33. Notes

34. Notes

35. Notes

36. Notes

37. Notes

38. Notes

39. Notes

40. Perceptual Interpretation
Differences in perception are learned
Critical period for normal sight
Perceptual adaptation