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Vision 2

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Questions and Answers

Why is the aqueous humour important?

It prevents damage to the retina as increase in pressure damages the retina. (correct)

It prevents damage to the retina as decrease in pressure damages the retina.

It allows the cornea to be hydrated.

It prevents the lens from being damaged.

Which one is not a cause of colour blindness?

No presence of red cone (protanopia)

No presence of the green cone (deuteranopia)

No presence of the blue cone (tritanopia)

No presence of the retinal ganglion cells (correct)

Colour blindness can be due to genetics and is more common in men.

True

Damage to which area leads to cerebral achromatopsia?

V8 Signup and view all the answers

Why does the colour of objects do not change when the colour of the lighting does?

Cells in the V4 are able to tell the difference between the colour of the surface and the colour of the light. Signup and view all the answers

The addition of red and green cone leads to

luminance Signup and view all the answers

Protamonely is where the green cone's sensitivity is shifted towards the red wavelength

False Signup and view all the answers

Which one of these are evidence for cells in V1 being binocular?

A perfect transfer effect from one eye to the other was found in 70% of experiments where they focused on the processing of each individual eye. Signup and view all the answers

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.

False Signup and view all the answers

The size of the receptive fields in V1 are

equal to the size of the stimuli Signup and view all the answers

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.