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Sensation & Perception. Intro: Blindfold Activity Debrief- How important are each of the senses? Debrief- How important are each of the senses? Rank them.

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Sensation & Perception. Frasers spiral 1908 Sensation Definition What occurs when a stimulus activates a receptor What occurs when a stimulus activates.

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Presentation on theme: "Sensation & Perception. Intro: Blindfold Activity Debrief- How important are each of the senses? Debrief- How important are each of the senses? Rank them."— Presentation transcript:

1 Sensation & Perception

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

3 Sensation & Perception Frasers spiral 1908

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

5 Stroop Effect

6 Perception Definition Organizing sensory info. into meaningful experiences Organizing sensory info. into meaningful experiences Brain tries to make sense of large amount of stimuli Brain tries to make sense of large amount of stimuli Creates wholes out of bits of info. (Gestalt) 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 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 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. Ex I perceive all old people as kind b/c my grandma is kind.

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

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

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

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

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

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

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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. 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 Fs 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- FIC STUDY COMBINED WITH THE EXPERIENCE OF YEARS Answer: 6 Most people see 3, but dont notice the fs on OF. It appears that we process those fs as vs.

25 Rene Magrittes The Human Condition Forcefully demonstrates the paradoxes of perception through painting Forcefully demonstrates the paradoxes of perception through painting

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28 Size Constancy

29 Simultaneous Contrast

30 The donguri wave" illusion

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

32 Site Rankings By WhozOnTop.comWhozOnTop.com Rank Over All#8 Category - Colleges & Universiti es Colleges & Universiti es - Country - USAUSA- City - HanoverHanover- Visitor Approval Rating: 7.50 Visitors/day 4, VoteVote | Login | RegisterLoginRegister Motion Parallax: 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. 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 01M&feature=related 01M&feature=related 01M&feature=related 01M&feature=related


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