How we study the brain - vision and perception
8 important questions on How we study the brain - vision and perception
What causes color after images? What does this tell us about color vision?
Why aren't you aware of your blind spot?
When you are looking at a star in the sky at night, it is sometimes clearer if you look slightly away instead of right at it. Why?
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What is perceptual constancy? What does it tell us about perception?
Perceptual constancy is when objects maintain their properties even when the context changes their physical characteristics, our brain continually takes the lighting into account when it decided how it should be interrupt the wavelengths coming in. Instead of seeing the actual wavelengths it subtracts lighting conditions to help it figure out what the wavelength should be and not what it actually is.
This tells us that our perception is not the physical world but actually what we think it should be.
We sometimes say that perceptual processing is hierarchical. What does that mean?
Can you think of other examples of top-down (or conceptual-driven) perception in your daily life? (2)
- Reading
- Driving
What do apperceptive, associative and prosopagnosia disorders tell us about visual recognition?
As a result of a brain injury, a patient is able to identify what objects are, but when they reach for the object, it isn't where they think it is. Which visual pathway do you think was affected?
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