Download - Illusions and Constancies
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Perceptual Interpretation• Learning Goals:
– Students should be able to answer the following:
1. What does research on sensory deprivation and restored vision reveal about the effects of experience on perception?
2. How adaptable is our ability to perceive?
3. How do our expectations, contexts and emotions influence our perceptions?
1
Rating Student Evidence
4.0 Expert
I can teach someone else about the components of perceptual interpretation In addition to 3.0 , I can demonstrate applications and inferences beyond what was taught
3.0Proficient
I can analyze the components of perceptual interpretation, and compare/contrast the Aspects of the learning goal.
2.0 Developing
I can identify terms associated with components of perceptual interpretation, but need to review this concept more.
1.0Beginning
I don’t understand this concept and need help!
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Taste/Smell
The EarSound
Depth cuesGestaltPerceptionMovementTouch/Pain
SeeingThe EyeLightIgnoring CNS
Illusions
Stroboscopic Motion and Phi Phenomenon
• Stroboscopic Motion: 24 still pictures flashing within
one second create the illusion of motion (example:
flip books and cartoons)
• The phi phenomenon is the optical illusion of perceiving
continuous motion between separate objects viewed
rapidly in succession.(example: neon or scrolling
signs)
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Taste/Smell
The EarSound
Depth cuesGestaltPerceptionMovementTouch/Pain
SeeingThe EyeLightIgnoring CNS
Illusions
Phi Phenomenom
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Taste/Smell
The EarSound
Depth cuesGestaltPerceptionMovementTouch/Pain
SeeingThe EyeLightIgnoring CNS
Illusions
Halloween Phi Phenomenon
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Taste/Smell
The EarSound
Depth cuesGestaltPerceptionMovementTouch/Pain
SeeingThe EyeLightIgnoring CNS
Illusions
Shape Constancy
Perceiving objects as unchanging even as illumination and retinal images change. Perceptual constancies include constancies of shape and size.
5Shape Constancy
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Taste/Smell
The EarSound
Depth cuesGestaltPerceptionMovementTouch/Pain
SeeingThe EyeLightIgnoring CNS
Illusions
Size Constancy
Stable size perception amid changing size of the stimuli. We know the one car is just farther away, but still the same size.
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Taste/Smell
The EarSound
Depth cuesGestaltPerceptionMovementTouch/Pain
SeeingThe EyeLightIgnoring CNS
Illusions
Size-Distance Relationship
The distant monster (below, left) and the top red bar (below, right) appear bigger because of distance cues.
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The moon appears larger
on the horizon because
of context effects make it look
farther away like the monster
Ponzo Illusion
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Taste/Smell
The EarSound
Depth cuesGestaltPerceptionMovementTouch/Pain
SeeingThe EyeLightIgnoring CNS
Illusions
Size-Distance Relationship
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Taste/Smell
The EarSound
Depth cuesGestaltPerceptionMovementTouch/Pain
SeeingThe EyeLightIgnoring CNS
Illusions
Size-Distance Relationship
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Taste/Smell
The EarSound
Depth cuesGestaltPerceptionMovementTouch/Pain
SeeingThe EyeLightIgnoring CNS
Illusions
Ames Room
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The Ames room is designed to demonstrate the size-distance illusion.
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Taste/Smell
The EarSound
Depth cuesGestaltPerceptionMovementTouch/Pain
SeeingThe EyeLightIgnoring CNS
Illusions
Lightness Constancy
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The color and brightness of square A and B are the same.
Lightness
constancy -
enables us to
perceive an
object as
having a
constant
lightness even
when the light
that falls on it
changes.
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Taste/Smell
The EarSound
Depth cuesGestaltPerceptionMovementTouch/Pain
SeeingThe EyeLightIgnoring CNS
Illusions
Color Constancy
Objects will change color depending on the CONTEXT of surrounding objects or colors
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Color Constancy
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Taste/Smell
The EarSound
Depth cuesGestaltPerceptionMovementTouch/Pain
SeeingThe EyeLightIgnoring CNS
Illusions
Perceptual Adaptation
You have the ability to adapt to distortion goggles rather quickly. Usually in a couple of hours to days. Some animals can never adapt.
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Taste/Smell
The EarSound
Depth cuesGestaltPerceptionMovementTouch/Pain
SeeingThe EyeLightIgnoring CNS
Illusions
Inverted Vision
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Taste/Smell
The EarSound
Depth cuesGestaltPerceptionMovementTouch/Pain
SeeingThe EyeLightIgnoring CNS
Illusions
Muller-Lyer Illusion
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Illusions provide good examples in understanding how perception is organized. Studying faulty perception is as important as studying other
perceptual phenomena.
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Taste/Smell
The EarSound
Depth cuesGestaltPerceptionMovementTouch/Pain
SeeingThe EyeLightIgnoring CNS
Illusions
Culture and Perception
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Taste/Smell
The EarSound
Depth cuesGestaltPerceptionMovementTouch/Pain
SeeingThe EyeLightIgnoring CNS
Illusions
Perceptual Set
A mental predisposition to perceive one thing and not another. What you see in the center picture is influenced by flanking pictures.
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Half the class close your eyes while the other half looks at an image:
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Taste/Smell
The EarSound
Depth cuesGestaltPerceptionMovementTouch/Pain
SeeingThe EyeLightIgnoring CNS
Illusions
Perceptual Set
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(a)Loch ness monster or a tree trunk;
(b)Flying saucers or clouds?
(c) The face on mars because of perceptual schema
Other examples of perceptual set.
(c)
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Taste/Smell
The EarSound
Depth cuesGestaltPerceptionMovementTouch/Pain
SeeingThe EyeLightIgnoring CNS
Illusions
Eye & Mouth Schemas
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Taste/Smell
The EarSound
Depth cuesGestaltPerceptionMovementTouch/Pain
SeeingThe EyeLightIgnoring CNS
Illusions
Eye & Mouth Schemas
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Taste/Smell
The EarSound
Depth cuesGestaltPerceptionMovementTouch/Pain
SeeingThe EyeLightIgnoring CNS
Illusions
Motivation and Emotion influence Perception
• Walking destinations look farther way when fatigued
• Hills look steeper when carrying a heavy backpack
• Targets seem father away when throwing a heavy object
• When you are driving you hate pedestrians, when you are a pedestrian you hate drivers
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If you are rewarded
for seeing a farm
animal, you will see a
farm animal
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Learning Goal:1. What does research on sensory deprivation and restored vision reveal about
the effects of experience on perception?
2. How adaptable is our ability to perceive?
3. How do our expectations, contexts and emotions influence our perceptions?
22
Rating Student Evidence
4.0 Expert
I can teach someone else about the components of perceptual interpretation In addition to 3.0 , I can demonstrate applications and inferences beyond what was taught
3.0Proficient
I can analyze the components of perceptual interpretation, and compare/contrast the Aspects of the learning goal.
2.0 Developing
I can identify terms associated with components of perceptual interpretatio, but need to review this concept more.
1.0Beginning
I don’t understand this concept and need help!