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5 Cards in this Set
- Front
- Back
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What are ommatidia, why was it important to study? |
Receptors in the crab's eye that consist of a lens overlying a single receptor -each lens is the diameter of a pencil -possible to stimulate only a single receptor |
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Define lateral inhibition |
Inhibitory signals that are sent between neighbouring neurons in the nervous system |
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What does the Hermann grid tell us? Less intense stimuli receive more or less lateral inhibition? |
We see gray spots in the intersections, and all 5 receptors receive the same illumination *Rate law- more intense stimuli rest in a higher rate of neural firing (more intense stimuli also create GREATER lateral inhibition) Less lateral inhibition |
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What does the simultaneous contrast illusion tell us? |
Explained by lateral inhibition BUT lateral inhibition doesn't explain everything because we would expect that the square would look lighter near the border and darker in the centre, but it doesn't. |
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How is white's illusion explained? |
Not by lateral inhibition, influenced by belongingness-states that an areas appearance is influenced by the part of the surroundings to which the area appears to belong |
