Visual processing in_vertebrate_retina

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Visual processing in_vertebrate_retina

  1. 1. VISUALPROCESSINGPATHWAYS OFRETINA
  2. 2. FIGURE 1Localization of gonadotropinreleasing hormone (GnRH) in theretina. Schematic illustration of aretinal cross section shows threeparallel layers of cell nucleiseparated by two plexiform layers.A, B, C Immunohistological stainingof fibers containing.
  3. 3. FIGURE 2GnRH receptor type 1 expressionpattern in the retina. A In situhybridization with a probe againstGnRH-R1 mRNA revealed that a smallpercentage of cells in the amacrinecell layer with a sparse distributionexpress GnRH-R1 as shown by densely.
  4. 4. FIGURE 3Tyrosine hydroxylase-positive cells in theretina. A Whole-mounted retinashowing cellsimmunoreactive fortyrosine hydroxylase(red). Cells weredistributed across theretina within theamacrine layer in asomewhat regularpattern. Bar = 100μm.
  5. 5. FIGURE 4GnRH receptor type 2expression in theretina. A In situhybridization toGnRH-R2 mRNA revealedwidespread expressionin the ganglion celllayer (GCL). BNegative controlshows no signalpattern. INL = Innernuclear layer; ONL =outer nuclear layer.
  6. 6. FIG URE 5Th e ore tical m od e l ofG nR H e ffe cts in re tinalcircu itry. G nR Hre ach e s typ e 1re ce p tors ind op am ine rgic ce lls(D A) of th e am acrinece ll laye r and typ e 2re ce p tors in ganglionce lls (G ). Arrowsind icate th e d ire ction ofinform ation b e twe e n

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