Vision- Retinal ProcessingReceptive Field-Slide 3Bipolar Cells2 Types of Bipolar Cells- ON and OFFBipolar cells have center-surround receptive fieldsSlide 7Slide 8Slide 9How would an OFF center ganglion cell respond to edges?Slide 11Color-opponent ganglion cellsSummaryVision- Retinal Processing•How does information about light (and dark) get processed in the retina?–How do bipolar cells respond to light in their receptive fields?–How do ganglion cells respond to light in their receptive fields?Receptive Field-Would peripheral retinal ganglion cells have a larger or smaller receptive fields than those in the fovea?a) Largerb) Smallerc) SameBipolar Cells2 Types:•OFF-•ON-ONAMPA mGLU-ROFFOFF bipolar cell ON bipolar cellOFF ganglion cell ON ganglion cellOFFAMPA mGLU-RONOFF bipolar cell ON bipolar cellOFF ganglion cell ON ganglion cell2 Types of Bipolar Cells- ON and OFFIn dark:In light:Bipolar cells have center-surround receptive fieldsWhat kind of visual stimulus producesthe largest depolarization for an OFF bipolar cell? OFFWhat kind of visual stimulus producesthe largest depolarization for an ON bipolar cell? ONRetinal ganglion cells also have center-surround receptive fieldsHow would an OFF center ganglion cell respond to edges?Color-opponent ganglion cells•Red-Green•Blue-YellowSummary•Bipolar cells:–Either ON or OFF cells–Have center-surround receptive fields•Surround always responds the opposite way as the center–Have graded electrical responses•Ganglion cells:–Either ON or OFF cells–Have center-surround receptive fields•Surround always responds the opposite way as the center–Produce action
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