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Question 1
Question
The "Principle of Univariance" states that:
Answer
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Different light intensities can always be discriminated
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Different wavelengths cause different responses in photoreceptors
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Photoreceptor responses can vary in only one dimension
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Individual photoreceptors have no wavelength selectivity
Question 2
Question
Neurons demonstrating the property of colour constancy are first encountered in:
Answer
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The retina
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The striate cortex
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The LGN
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Area V4
Question 3
Question
In humans, the outputs of the three cone types are compared in various ways to create "opponent" channels which transmit all of the following except:
Answer
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Red/green information
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Black/white (luminance) information
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Absolute wavelength information
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Blue/yellow information
Question 4
Question
An observer who is unable to discriminate certain pairs of stimuli from one another which differ only in their wavelength composition might be:
Answer
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A deuteranope
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A normal trichromat
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Suffering from cerebral achromatopsia
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All of the options given are correct
Question 5
Question
Mixing blue and yellow paint together to make green is an example of:
Answer
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Additive colour mixture
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Chromatic induction
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Subtractive colour mixture
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Colour matching
Question 6
Question
The electromagnetic spectrum consists of all the following except:
Answer
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Spatial frequencies
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Infrared radiation
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X-rays
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Visible light
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