OSA's Digital Library

Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 70, Iss. 1 — Jan. 1, 1980
  • pp: 71–81

Stiles’s II5 color mechanism: Tests of field displacement and field additivity properties

C. Sigel and E. N. Pugh, Jr.  »View Author Affiliations

JOSA, Vol. 70, Issue 1, pp. 71-81 (1980)

View Full Text Article

Acrobat PDF (1493 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



The II5 color mechanism was isolated in two observers with a 667 nm, 200 ms, 1 deg foveal test flash. Stiles’s field displacement law and the law of field additivity were tested with increment thresholds upon monochromatic and bichromatic adapting fields. The data of both observers obey the displacement law and exhibit no systematic deviations from additivity. Our results cannot reject the hypothesis that the first log unit of adaptation observed under II5-isolation conditions is determined exclusively by the quantum catch rate of the long-wavelength-sensitive cones.

© 1980 Optical Society of America

C. Sigel and E. N. Pugh, Jr., "Stiles’s II5 color mechanism: Tests of field displacement and field additivity properties," J. Opt. Soc. Am. 70, 71-81 (1980)

Sort:  Author  |  Year  |  Journal  |  Reset


  1. W. S. Stiles, "The directional sensitivity of the retina and the spectral sensitivity of the rods and cones," Proc. R. Soc. Ser. B, 127, 64–105 (1939).
  2. W. S. Stiles, "Further studies of visual mechanisms by the two-color increment threshold technique," Coloq. Prob. Opt. Vis. (Madrid) 1, 65–103 (1953).
  3. See, e.g., J. M. Enoch, "The two-color threshold technique of Stiles," in Handbook of Sensory Physiology, edited by D. Jameson and L. M. Hurvich (Springer, New York, 1972), Vol. VII/4, p. 556.
  4. See, e.g., R. W. Rodieck, The Vertebrate Retina (Freeman, San Francisco, 1973), p. 731.
  5. E. N. Pugh, Jr. and C. Sigel, "Evaluation of the candidacy of the mechanisms of Stiles for color-matching fundamentals," Vision Res. 18, 317–330 (1978).
  6. G. S. Brindley, "Two theorems in color vision," Q. J. Exp. Psych. 9, 101–112 (1957).
  7. H. Grassmann, "Zur Theorie der Farbenmischung," Ann. Phys. (Leipzig) 89, 69–84 (1853).
  8. D. H. Krantz, "Color measurement and color theory. I. Representation theorem for Grassmann structures," J. Math. Psych. 12, 283–303 (1975).
  9. K. I. Naka and W. A. H. Rushton, "S-potentials from colour units in retina of fish (Cyprinidae)," J. Physiol. London 185, 535–555 (1966).
  10. B. Wandell, "Foveal recovery following chromatic adaptation," Ph.D. thesis, University of California, Irvine, 1977 (unpublished).
  11. B. Wandell and E. N. Pugh, Jr., "II′5 is not a cone," paper presented at ARVO annual meeting, Sarasota, Florida, 1978.
  12. W. S. Stiles, "Mechanisms of Colour Vision," (Academic, New York, 1978).
  13. E. N. Pugh, Jr., "The nature of the II1 mechanism of W. S. Stiles," J. Physiol. London 257, 713–714 (1976).
  14. E. Wyszecki and W. S. Stiles, Colour Science, Concepts and Methods (Wiley, New York, 1967).
  15. Reference 1, Figs. 37 and 38; Ref. 13, Fig. 4.
  16. W. M. Boynton, S. R. Das, and J. Gardiner, "Interactions between photopic visual mechanisms revealed by mixing conditioning fields." J. Opt. Soc. Am. 56, 1775–1780 (1966).
  17. C. E. Sternheim, C. F. Stromeyer, III, and M. C. K. Khoo, "Visibility of chromatic flicker upon spectrally mixed adapting fields," Vision Res. 19, 175–184 (1979).
  18. L. Sirovich and I. Abramov, "Photopigments and pseudo-pigments," Vision Res. 17, 5–16 (1977).
  19. W. A. H. Rushton and G. Westheimer, "The effect upon the rod threshold of bleaching neighboring rods," J. Physiol. London 164, 318–329 (1962).
  20. D. G. Green, L. Tong, and C. M. Cicerone, "Lateral spread of light adaptation in the rat retina," Vision Res. 17, 479–486 (1977).
  21. M. Alpern and W. A. H. Rushton, "The specificity of the cone interaction in the after-flash effect," J. Physiol. London 176, 473–482 (1965).
  22. S. McKee and G. Westheimer, "Specificity of cone mechanisms in lateral interaction," J. Physiol. London 206, 117–128 (1970).
  23. K. H. Ruddock, "Light transmission through the ocular media and macular pigment," in Handbook of Sensory Physiology, edited by D. Jameson and L. M. Hurvich (Springer, New York, 1972), Vol. VII/4.
  24. D. A. Baylor and A. L. Hodgkin, "Changes in time scale and sensitivity in turtle photoreceptors," J. Physiol. London 242, 729–758 (1974).
  25. J. K. Bowmaker, H. J. A. Dartnall, J. N. Lythgoe, and J. D. Mollon, "The visual pigments of rods and cones in the rhesus monkey, Macaca mulatta," J. Physiol. London 274, 329–348 (1978).
  26. M. Alpern and E. N. Pugh, Jr., "The variation in the action spectrum of erythrolabe among deuteranopes," J. Physiol. London 266, 613–646 (1977).

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited