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| Interneurons and Ganglion |
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| cells |
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| Center-surround
organization: |
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| 1. | Light
hyperpolarizes the rod and excites |
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| the bipolar cell
below it |
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| 2. | But inhibitory
connections through |
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| horizontal cells
suppress signals |
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| 3. | Best response to
localized “dot” |
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| 4. | While
stimulating surround only lowers |
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| firing rate |
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| • | What is this??? |
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| Convolution!!! Im*[-1 2 –1] |
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| 13 |