cannot tell the difference between colour due to a univariate sensitivity level - colour=sens*intensity
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What is colour blindness?
A mistuned cone type usually, missing cone, some people have 1 or 0 cones
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What is cortical colour blindness?
colour blindness due to damage in the v8 sector.
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what is colour opponency?
compares the activity of cones - luminance =r+g- r/g- lum/blue - shown by colour after effect
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how are colour opponent cells structured
centre surround- 1 colour is excretory - the other is inhibitory
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how are the opponent colours used for colour trichomacy?
luminance allows us to see clear shapes - y/b = shadows+light - r/g = foliage and fruit
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explain colour constancy
if we see a colour, then another colour reflects onto it or illuminates it, we will still see the original colour - the colour reflected depends on the light shined on it
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How does it work?
Automatically - ignore the light reflection - sector v8 is responsible for the conscious perception of colour
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colour constancy example?
v1+v4 shown white patch - then green illuminated over it - v1 now recognised the patch as green - v4 stayed constant on white - shows v4/v8 automatically processes colour constancy
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Other cards in this set
Card 2
Front
What is colour blindness?
Back
A mistuned cone type usually, missing cone, some people have 1 or 0 cones
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