The primate retina contains two types of ganglion cells, with high and low contrast sensitivity

E. Kaplan, Robert Shapley

Research output: Contribution to journalArticle

Abstract

Previously, we discovered that the broad-band cells in the two magnocellular (large cell) layers of the monkey lateral geniculate nucleus (LGN) are much more sensitive to luminance contrast than are the color-sensitive cells in the four parvocellular (small cell) layers. We now report that this large difference in contrast sensitivity is due not to LGN circuitry but to differences in sensitivity of the retinal ganglion cells that provide excitatory synaptic input to the LGN neurons. This means that the parallel analysis of color and luminance in the visual scene begins in the retina, probably at a retinal site distal to the ganglion cells.

Original languageEnglish (US)
Pages (from-to)2755-2757
Number of pages3
JournalProceedings of the National Academy of Sciences of the United States of America
Volume83
Issue number8
StatePublished - 1986

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Contrast Sensitivity
Ganglia
Primates
Retina
Geniculate Bodies
Color
Retinal Ganglion Cells
Haplorhini
Neurons

ASJC Scopus subject areas

  • General
  • Genetics

Cite this

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abstract = "Previously, we discovered that the broad-band cells in the two magnocellular (large cell) layers of the monkey lateral geniculate nucleus (LGN) are much more sensitive to luminance contrast than are the color-sensitive cells in the four parvocellular (small cell) layers. We now report that this large difference in contrast sensitivity is due not to LGN circuitry but to differences in sensitivity of the retinal ganglion cells that provide excitatory synaptic input to the LGN neurons. This means that the parallel analysis of color and luminance in the visual scene begins in the retina, probably at a retinal site distal to the ganglion cells.",
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AB - Previously, we discovered that the broad-band cells in the two magnocellular (large cell) layers of the monkey lateral geniculate nucleus (LGN) are much more sensitive to luminance contrast than are the color-sensitive cells in the four parvocellular (small cell) layers. We now report that this large difference in contrast sensitivity is due not to LGN circuitry but to differences in sensitivity of the retinal ganglion cells that provide excitatory synaptic input to the LGN neurons. This means that the parallel analysis of color and luminance in the visual scene begins in the retina, probably at a retinal site distal to the ganglion cells.

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