1. Sensation & Perception

2. Intro: Blindfold Activity
Debrief- How important are each of the senses?
Rank them w/% of importance
Sight
Touch
Hearing
Taste
Smell
Discuss
Question: If a tree falls in the woods and no one is around to hear it, does it make a sound?

3. Sensation & Perception
Fraser’s spiral 1908

4. Sensation Definition What occurs when a stimulus activates a receptor
Eg. The aroma of cookies baking in the oven activates your sense of smell
New Vocab: Threshold
Weber’s Law
The larger the stimulus, the larger the change for an observer to notice a difference

5. Stroop Effect
Name the color of the words, why is this a challenge?

6. Perception Definition
Organizing sensory info. into meaningful experiences
Brain tries to make sense of large amount of stimuli
Creates “wholes” out of bits of info. (Gestalt)

7. New Vocab: Perceptual Set
Past experiences and perceptions create a framework through which you view the world
Ex “I perceive the smell of cookies baking as comforting because my mom bakes them on special occasions.”
Ex “I perceive all old people as kind b/c my grandma is kind.”

9. Simplicity (Reification)
We see the simplest shape possible

11. Proximity
When objects are close together, we tend to perceive them as groups

13. Similarity
When similar and dissimilar objects are mingled, we see similar objects as groups

15. Closure
When we see a familiar pattern or shape w/missing parts, we fill in the gaps

17. Continuity
We tend to see continuous patterns, not disrupted ones

19. Figure and Ground
Discrimination between a figure and its background

21. Invariance
Simple geometrical objects are recognized independent of rotation, translation, and scale; as well as several other variations such as elastic deformations, different lighting, and different component features.

22. Other Interesting Perception Techniques

23. Count the number of “F’s”
FEATURE FILMS ARE THE RE-
SULT OF YEARS OF SCIENTI-
FIC STUDY COMBINED WITH
THE EXPERIENCE OF YEARS

24. FEATURE FILMS ARE THE RE- SULT OF YEARS OF SCIENTI-
Answer: 6
Most people see 3, but don’t notice the f’s on OF. It appears that we process those f’s as v’s.
FEATURE FILMS ARE THE RE-
SULT OF YEARS OF SCIENTI-
FIC STUDY COMBINED WITH
THE EXPERIENCE OF YEARS

25. Rene Magritte’s “The Human Condition”
Forcefully demonstrates the paradoxes of perception through painting

28. Size Constancy

29. Simultaneous Contrast

30. “The donguri wave" illusion

31. Does the dot appear to move?
Induced Motion:
Does the dot appear to move?

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Motion Parallax:
As we move, objects that are closer to us move farther across our field of view than do objects that are in the distance. 

33. Mueller-Lyer Illusion

34. Ouchi Apparent Motion Illusion

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37. "Expanding Golden Cushion"

38. Expanding Snakes

39. Optical Illusion