Questions and Answers
Why is the aqueous humour important?
It prevents damage to the retina as increase in pressure damages the retina.
Which one is not a cause of colour blindness?
No presence of the retinal ganglion cells
Colour blindness can be due to genetics and is more common in men.
True
Damage to which area leads to cerebral achromatopsia?
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Why does the colour of objects do not change when the colour of the lighting does?
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The addition of red and green cone leads to
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Protamonely is where the green cone's sensitivity is shifted towards the red wavelength
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Which one of these are evidence for cells in V1 being binocular?
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The tilt after effect occurs when we look at a vertical line, the vertical line cells are activated. Cells slightly to the right and left are not activated. The left tilt cells are inhibited led to us seeing a right tilt.
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The size of the receptive fields in V1 are
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Study Notes
Colour Vision and Perception
- Aqueous humour plays a crucial role in the functioning of the eye.
- Colour blindness can be caused by genetic factors and is more prevalent in men.
- Damage to the cerebral cortex can lead to cerebral achromatopsia.
- The colour of objects appears constant despite changes in lighting conditions due to the brain's ability to adjust.
- The combination of red and green cones enables colour perception.
- Protanomaly is a type of colour blindness where the green cone's sensitivity is shifted towards the red wavelength.
- Evidence for binocular cells in V1 includes:
- Different activation patterns for vertical lines
- Inhibition of left tilt cells leading to perception of right tilt
- The tilt after effect occurs when the brain adapts to vertical lines, causing a brief change in perceived tilt.
- The receptive fields in V1 are relatively small in size.
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