Trichromatic vision in the cat.

Academic Article


  • Many cat retinal ganglion cells (types X, Y, and W) have inputs from three separate cone systems. Those with peak sensitivities at 450 and 555 nanometers have been previously shown. A gamma max cone with a peak sensitivity of 500 nanometers can be differentiated from other cones by spectral sensitivity and from rods by receptive field differences, functioning above rod saturation levels, and by cone-rod breaks in the dark-adaptation curves. The similarity of the three-cone cat retina to the extramacular retina of the rhesus monkeys suggests that the cat may have photopic trichromatic vision.
  • Published In

  • Science  Journal
  • Keywords

  • Action Potentials, Animals, Cats, Color Perception, Dark Adaptation, Evoked Potentials, Ganglia, Photic Stimulation, Photoreceptor Cells, Retina, Vision, Ocular
  • Author List

  • Ringo J; Wolbarsht ML; Wagner HG; Crocker R; Amthor F
  • Start Page

  • 753
  • End Page

  • 755
  • Volume

  • 198
  • Issue

  • 4318