Aim: How does perception impact the way we experience the world? Thursday, November 19, 2015 Aim: How does perception impact the way we experience the world? Do Now: Homework: Sensation and Perception Homework due Friday Sensation and Perception/States of Consciousness Exam on Friday, December 4

Perceptual Organization: Depth Perception Aim: How does our perception impact the way we experience the world? Perceptual Organization: Depth Perception Depth Perception ability to see objects in three dimensions allows us to judge distance Visual Cliff

Depth Cues Eleanor Gibson and her Visual Cliff Experiment. Aim: How does our perception impact the way we experience the world? Depth Cues Eleanor Gibson and her Visual Cliff Experiment. If you are old enough to crawl, you are old enough to see depth perception.

Monocular Cues Methods used by a single eye to judge depth perception Aim: How does our perception impact the way we experience the world? Monocular Cues Interposition Linear Perspective Methods used by a single eye to judge depth perception Light and shadow Relative size Relative height

Perceptual Organization: Depth Perception Aim: How does our perception impact the way we experience the world? Perceptual Organization: Depth Perception Monocular Cues – depth cues available to either eye alone Relative height We perceive objects higher in our field of vision as farther away relative size smaller image is more distant interposition closer object blocks distant object relative clarity hazy object seen as more distant Linear perspective Parallel lines appear to converge with distance

Binocular Cues Methods used by both eyes to judge depth perception Aim: How does our perception impact the way we experience the world? Binocular Cues Methods used by both eyes to judge depth perception Retinal Disparity (as an object comes closer to us, the differences in images between our eyes becomes greater. Convergence (as an object comes closer our eyes have to come together to keep focused on the object). Did You Know? Retinal disparity is used by 3-D filmmakers… they achieve the 3-dimensional effect by displaying the film from two different projectors at once!

The floating finger sausage Aim: How does our perception impact the way we experience the world? The floating finger sausage Hold your two index fingers about 5 inches apart Now look beyond them and note the weird result Move your fingers out farther and the retinal disparity—and the finger sausage—will shrink

Aim: How does our perception impact the way we experience the world? Perceived Motion Phi Phenomenon – illusion of movement created when two or more adjacent lights blink on and off in quick succession

Perceptual Constancy Perceptual Constancy color shape size Aim: How does our perception impact the way we experience the world? Perceptual Constancy Perceptual Constancy perceiving objects as unchanging even as illumination and retinal image change color shape size

Perceptual Interpretation Aim: How does our perception impact the way we experience the world? Perceptual Interpretation Perceptual Set a mental predisposition to perceive one thing and not another Class Activity! Half the class needs to close their eyes….

Aim: How does our perception impact the way we experience the world? Face Schemas Our face recognition capabilities are mostly attuned to the eyes and mouth

Aim: How does our perception impact the way we experience the world?

Activities Complete the two activities on the handout Aim: How does our perception impact the way we experience the world? Activities Complete the two activities on the handout Be prepared to discuss