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Week 2: Vision in High Definition Lecture Notes

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Week 2: Vision in High Definition Lecture Notes

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Questions and Answers

What type of images are projected onto the surface of the retina?

Blurry and upside down images (correct)

Black and white images

No images are projected

Clear and sharp images

Why would having the whole retina in high resolution be problematic?

Photoreceptors would lose sensitivity

The blind spot would take up most of the retina (correct)

It would require more energy to process information

The optic nerve would be too small to carry all the information

Where does a lot of processing take place to reconstruct reality for conscious perception?

In the retina itself at the back of the eye (correct)

In the brain cortex

In the optic nerve

In the cornea

What would happen if every photoreceptor was connected directly to the brain?

The blind spot would be huge (D) Signup and view all the answers

What is a challenge associated with having a high-resolution retina?

The optic nerve would need to transmit more information (B) Signup and view all the answers

What is the purpose of the compression mechanism in the retina?

To avoid transmitting unnecessary information to the brain. (D) Signup and view all the answers

How does the brain create visual illusions like simultaneous contrast?

By compressing spatial information. (D) Signup and view all the answers

Why would it be inefficient for all red photoreceptors in the retina to be active when looking at a single block of red color?

To avoid overwhelming the brain with information. (C) Signup and view all the answers

What happens when green photoreceptors become active in the retina while looking at a green object?

Red photoreceptors also become active simultaneously. (B) Signup and view all the answers

What does the text suggest about the brain's energy consumption in processing visual information?

It consumes significantly less power compared to the rest of the body. (B) Signup and view all the answers