Cognitive Psychology - Lecture 2 Quiz

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What aspect of visual input is typically associated with our perception of brightness?
Light Intensity (Luminance)
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Security scanners often use 'edge detection' algorithms, to make the boundaries of objects stand out. A similar process occurs within the retina. What is it called?
Lateral Inhibition
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According to classic explanations of the Hermann Grid Illusion, we perceive faint grey blobs at the intersection of the white lines because retinal ganglion cells responding to this location.....
Are inhibited more than cells responding at other positions along the line
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Light consists of what?
Photons
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Light interacts with subjects and surfaces. What interaction is not seen with these surfaces?
Dissolves
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How do single-chambered eyes project images onto the retina?
Uses convex corneas and convex lens
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What does directional sensitivity do?
Represents the spatial structure
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What are responsible for transducing light into electrical potential?
Photoreceptors
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What part of the brain processes visual stimuli?
Primary Visual Cortex (V1)
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Rods are used in what scenario(s)?
Low light level
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Cones are used in what scenario (s)?
High light levels
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Where are the rods primarily located?
Peripheral retina
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Where are the cones concentrated?
Fovea
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The brain uses knowledge of how light interacts with objects when perceiving brightness. Is this...
Top-Down Processing
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The same object will look the same under different light conidtions. What is this effect called?
Brightness Constancy
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What area is responsible for encoding contrast?
Retina
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What happens to the sensitivity when the mean intensity of an image is high?
It reduces
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What Illusion occurs due to Light/Dark adaptations?
Negative Afterimages
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The visual system can become sensitive to changes in luminance from what?
Lateral Inhibition
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What is a correct explanation for the Herrman Grid illusion?
Intersections have a higher intensity resulting in more inhibition in the on-center, off surround receptive fields
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What influences cause errors in 2D images portraying 3d images?
Top-Down influences
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What Happens in the Checker-shadow illusion?
2 squares are percieved as grey and white even though they are the same grey colour with identical luminance but a different brightness
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Why do we perceive a lack of colour in low light conditions?
Only rod photoreceptors are sensitive enough to operate
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What is NOT a cone photoreceptor?
P-Cones
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What Cone is responsible for middle wavelength of light?
M-cones
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Colour Blindness occurs due to variations of trichromacy. True or False?
True
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What is another name for complete colour blindness?
Monochromacy
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What is assessed using the Ishihara Colour Test?
Anomalous Trichromacy
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Other cards in this set

Card 2

Front

Security scanners often use 'edge detection' algorithms, to make the boundaries of objects stand out. A similar process occurs within the retina. What is it called?

Back

Lateral Inhibition

Card 3

Front

According to classic explanations of the Hermann Grid Illusion, we perceive faint grey blobs at the intersection of the white lines because retinal ganglion cells responding to this location.....

Back

Preview of the front of card 3

Card 4

Front

Light consists of what?

Back

Preview of the front of card 4

Card 5

Front

Light interacts with subjects and surfaces. What interaction is not seen with these surfaces?

Back

Preview of the front of card 5
View more cards

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