Patching and Staining a Neuron in Slice
This movie illustrates how a patch electrode can approach, patch and inject dye into a single retinal neuron. In this case it's a bipolar cell in a salamander retina. The dye is Lucifer Yellow

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Cartoon of the retina showing layering of neurons

Directional Selectivity

Feedback and Crossover inhibition

Multiple Representations of the Visual Scene

Regions of space/time frequency

Space-time rasters for ON and OFF cells

Patching a neuron in a retinal slice

Targeting Retinal Neuron Subregions with Arficial Rhodopsins