lec4 - The visual and oculomotor systems Peter H. Schiller,...

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The Midget and Parasol Channels The visual and oculomotor systems Peter H. Schiller, year 2006
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MIDGET SYSTEM PARASOL SYSTEM ON OFF ON OFF Neuronal response profile time or
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Green ON and OFF Red ON and OFF ganglion cells ganglion cells cones OFF bipolars ON IPL, OFF IPL, ON ON OFF ON OFF ON OFF Midget system
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Blue/yellow ganglion cell BLUE YELLOW Yellow/blue ganglion cell YELLOW BLUE OFF ? ON OFF ON OFF Blue/yellow system
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reen ON and OFF Red ON and OFF ganglion cells ganglion cells cones OFF OFF bipolars H ON A ON OFF OFF ON OFF IPL, OFF IPL, ON ON OFF ON ON Blue/yellow ganglion cell BLUE YELLOW Yellow/blue ganglion cell YELLOW BLUE ? ON OFF G Midget and blue/yellow system
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cones Parasol system H bipolars A ganglion cells OFF ON OFF ON IPL, OFF IPL, ON
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fovea periphery eccentricity Number of midget and parasol cells per unit area as a function of eccentricity midget parasol fovea 6 5 4 periphery 3 4 mber of cells 2 3 1 2 1 6 layers 4 layers midget/parasol ratio: Nu fovea: 8 to 1 periphery: 1 to 1
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Projections of the retinal ganglion cells
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The central connections of the midget and parasol channels
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inject blocker V Magno record 1 LGN Tissue block with injections V MT 4 ?
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Figure by MIT OCW. 60- 40- 20- 80- 60- 40- 20- 80- 60- 40- 80- 60- 40- 20- 20- 80- 60- 40- 20- Spikes per bin Normal Parvo Injection Magno Injection Paired Injection Recovery Vl complex cell response to moving light bar
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P V 1 Midget MT Midget Mixed Parasol w LGN ?
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This note was uploaded on 11/11/2011 for the course BIO 9.07 taught by Professor Ruthrosenholtz during the Spring '04 term at MIT.

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lec4 - The visual and oculomotor systems Peter H. Schiller,...

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