Abstract

Foveal increment thresholds, with particular reference to the blue, were investigated when the retina was in the process of recovery from preadaptation to high and medium luminance fields of long wavelengths. While confirming Wald and Auerbach’s finding of an inflection in the blue recovery from adaptation to very high luminance, and Stiles’s observation of an initial rise of threshold, over the light-adapted value, the results also indicated (1) that the inflection could not readily be related to any of the <i>π</i><sub>1</sub>, <i>π</i><sub>2</sub> and <i>π</i><sub>3</sub> receptors, and (2) that the maximum of the <i>π</i><sub>2</sub> sensitivity in the blue region could not lie at wavelengths longer than 470 mµ.

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  1. W. S. Stiles, Proc. Roy Soc (London) B127, 64 (1939).
  2. W. S. Stiles, Proc. Roy. Soc. (London) B133, 418 (1946).
  3. W. S. Stiles, Rev. Opt. 28(4), 215 (1949).
  4. W. S. Stiles, Union Internationale de Physique Pure et Appliquée, Coloquio Sobre Problemas Opticos de la Vision, Madrid, 65 (1953).
  5. S. Hecht and J. Mandelbaum, Am. J. Physiol. 130, 651 (1940).
  6. J. Mandelbaum and E. U. Mintz, Am. J. Ophthalmol. 24, 1241 (1941).
  7. G. Wald and E. Auerbach, Am. J. Ophthalmol. 39, 124 (1955).
  8. W. S. Stiles, Doc. Ophthalmol. 3, 138 (1949).
  9. W. S. Stiles, Proc. Natl. Acad. Sci. U. S. 45, 100 (1959).
  10. H. H. Crawford, Proc. Roy. Soc. (London) B134, 283 (1947).
  11. W. A. H. Rushton, J. Opt. Soc. Am. 53 104 (1963).
  12. H. D. Baker, J. Opt. Soc. Am. 43, 798 (1953).
  13. H. D. Baker, J. Opt. Soc. Am. 53, 98 (1963).
  14. H. D. Baker, M. D. Doran, and K. E. Miller, J. Opt. Soc. Am. 49, 1065 (1959).
  15. R. M. Boynton, G. Kandel, and J. W. Onley, J. Opt. Soc. Am. 49, 654 (1959).

Auerbach, E.

G. Wald and E. Auerbach, Am. J. Ophthalmol. 39, 124 (1955).

Baker, H. D.

H. D. Baker, M. D. Doran, and K. E. Miller, J. Opt. Soc. Am. 49, 1065 (1959).

H. D. Baker, J. Opt. Soc. Am. 53, 98 (1963).

H. D. Baker, J. Opt. Soc. Am. 43, 798 (1953).

Boynton, R. M.

R. M. Boynton, G. Kandel, and J. W. Onley, J. Opt. Soc. Am. 49, 654 (1959).

Crawford, H. H.

H. H. Crawford, Proc. Roy. Soc. (London) B134, 283 (1947).

Doran, M. D.

H. D. Baker, M. D. Doran, and K. E. Miller, J. Opt. Soc. Am. 49, 1065 (1959).

Hecht, S.

S. Hecht and J. Mandelbaum, Am. J. Physiol. 130, 651 (1940).

Kandel, G.

R. M. Boynton, G. Kandel, and J. W. Onley, J. Opt. Soc. Am. 49, 654 (1959).

Mandelbaum, J.

J. Mandelbaum and E. U. Mintz, Am. J. Ophthalmol. 24, 1241 (1941).

S. Hecht and J. Mandelbaum, Am. J. Physiol. 130, 651 (1940).

Miller, K. E.

H. D. Baker, M. D. Doran, and K. E. Miller, J. Opt. Soc. Am. 49, 1065 (1959).

Mintz, E. U.

J. Mandelbaum and E. U. Mintz, Am. J. Ophthalmol. 24, 1241 (1941).

Onley, J. W.

R. M. Boynton, G. Kandel, and J. W. Onley, J. Opt. Soc. Am. 49, 654 (1959).

Rushton, W. A. H.

W. A. H. Rushton, J. Opt. Soc. Am. 53 104 (1963).

Stiles, W. S.

W. S. Stiles, Proc. Natl. Acad. Sci. U. S. 45, 100 (1959).

W. S. Stiles, Rev. Opt. 28(4), 215 (1949).

W. S. Stiles, Proc. Roy Soc (London) B127, 64 (1939).

W. S. Stiles, Doc. Ophthalmol. 3, 138 (1949).

W. S. Stiles, Proc. Roy. Soc. (London) B133, 418 (1946).

W. S. Stiles, Union Internationale de Physique Pure et Appliquée, Coloquio Sobre Problemas Opticos de la Vision, Madrid, 65 (1953).

Wald, G.

G. Wald and E. Auerbach, Am. J. Ophthalmol. 39, 124 (1955).

Other (15)

W. S. Stiles, Proc. Roy Soc (London) B127, 64 (1939).

W. S. Stiles, Proc. Roy. Soc. (London) B133, 418 (1946).

W. S. Stiles, Rev. Opt. 28(4), 215 (1949).

W. S. Stiles, Union Internationale de Physique Pure et Appliquée, Coloquio Sobre Problemas Opticos de la Vision, Madrid, 65 (1953).

S. Hecht and J. Mandelbaum, Am. J. Physiol. 130, 651 (1940).

J. Mandelbaum and E. U. Mintz, Am. J. Ophthalmol. 24, 1241 (1941).

G. Wald and E. Auerbach, Am. J. Ophthalmol. 39, 124 (1955).

W. S. Stiles, Doc. Ophthalmol. 3, 138 (1949).

W. S. Stiles, Proc. Natl. Acad. Sci. U. S. 45, 100 (1959).

H. H. Crawford, Proc. Roy. Soc. (London) B134, 283 (1947).

W. A. H. Rushton, J. Opt. Soc. Am. 53 104 (1963).

H. D. Baker, J. Opt. Soc. Am. 43, 798 (1953).

H. D. Baker, J. Opt. Soc. Am. 53, 98 (1963).

H. D. Baker, M. D. Doran, and K. E. Miller, J. Opt. Soc. Am. 49, 1065 (1959).

R. M. Boynton, G. Kandel, and J. W. Onley, J. Opt. Soc. Am. 49, 654 (1959).

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