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Functional Imaging of Cone Photoreceptors

  • Lawrence C. SincichEmail author
  • Ramkumar Sabesan
  • William S. Tuten
  • Austin Roorda
  • Wolf M. Harmening
Chapter
Part of the Springer Series in Vision Research book series (SSVR, volume 5)

Abstract

Color pervades our visual sensory world, yet our understanding of the neural basis of color perception, starting with the retina and on through the multiple cortical areas that subserve vision, is still incomplete. The L, M, and S cone photoreceptors, being the cellular entry point for trichromatic vision in humans and primates, have been studied in a variety of ways to reveal their relative numbers, their spatial arrangement, and their anatomical connectivity. We review work in these species that has linked mapped cone mosaics directly to functional properties such as single neuron responses in the retina and color percepts arising from cone-targeted microstimulation. Technical issues that constrain access to single cone photoreceptors for functional studies are also considered.

Keywords

Cone photoreceptors Waveguides Adaptive optics Absorptance imaging Microstimulation Chromatic dispersion Fixational eye motion Retinal vessels Increment threshold Color psychophysics 

Notes

Acknowledgements

We thank J. K. Bowmaker, K. S. Bruce, E. J. Chichilnisky, G. D. Field, J. D. Mollon, and B. Schmidt for generously providing materials for figures. For improving the text, we are grateful to K. S. Bruce, T. W. Kraft, M. S. Loop, and A. S. McKeown. Our work has been supported by the National Eye Institute (L.C.S., W.S.T., A.R.), the Eyesight Foundation of Alabama (L.C.S.), Fight for Sight (R.S.), the American Optometric Foundation (W.S.T.), and German Research Council grant Ha 5323/5-1 (W.M.H.). Ramkumar Sabesan holds a Career Award at the Scientific Interfaces from the Burroughs Wellcome Fund.

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Copyright information

© Springer International Publishing Switzerland 2016

Authors and Affiliations

  • Lawrence C. Sincich
    • 1
    Email author
  • Ramkumar Sabesan
    • 2
  • William S. Tuten
    • 2
  • Austin Roorda
    • 2
  • Wolf M. Harmening
    • 3
  1. 1.Department of Optometry and Vision ScienceUniversity of Alabama at BirminghamBirminghamUSA
  2. 2.School of OptometryUniversity of CaliforniaBerkeleyUSA
  3. 3.Department of OphthalmologyUniversity of BonnBonnGermany

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