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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 34, Iss. 12 — Dec. 1, 1944
  • pp: 738–743

Visual Resolution as a Function of Intensity and Exposure Time in the Human Fovea

JORMA I. NIVEN and ROBERT H. BROWN  »View Author Affiliations

JOSA, Vol. 34, Issue 12, pp. 738-743 (1944)

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JORMA I. NIVEN and ROBERT H. BROWN, "Visual Resolution as a Function of Intensity and Exposure Time in the Human Fovea," J. Opt. Soc. Am. 34, 738-743 (1944)

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  1. G. L. Walls, J. Opt. Soc. Am. 33, 487 (1943).
  2. See, for example, W. Uhthoff, Graefes Archiv. f. Ophthal. 32, Abt. 1, 171 (1886) and 36, Abt. 1, 33 (1890); A. König, Sitz. d. Akad. d. Wiss. Berlin 8, 559 (1897); and more recently, S. Hecht, J. Gen. Physiol. 11, 255 (1928); R. J. Lythgoe, Great Britain Med. Res. Coun. Spec. Rep. Ser. No. 173 (1932); and S. Shlaer, J. Gen. Physiol. 21, 165 (1937).
  3. S. Hecht and E. U. Mintz, J. Gen. Physiol. 22, 593 (1939).
  4. S. Hecht, J. Gen. Physiol. 18, 767 (1935).
  5. C. H. Graham and E. H. Kemp, J. Gen. Physiol. 21, 635 (1938).
  6. See also, M. Keller, J. Exper. Psychol. 28, 407 (1941).
  7. In addition to the above, C. H. Graham and C. Cook, Am. J. Psychol. 49, 654 (1937).
  8. C. H. Graham, R. H. Brown, and F. A. Mote, Jr., J. Exper. Psychol. 24, 555 (1939); C. H. Graham and N. R. Bartlett, J. Exper. Psychol. 24, 574 (1939) and 27, 149 (1940).
  9. P. W. Cobb, Am. J. Physiol. 36, 335 (1914); and J. Steinhardt, J. Gen. Physiol. 20, 185 (1936).
  10. R. H. Brown and J. I. Niven, J. Exper. Psychol. 34, (1944). The methods and results of the present paper are described in full detail in the doctoral dissertation, "The influence of stimulus duration upon the relation between visual resolution and illumination," by J. I. Niven, on file in the Clark University Library.
  11. S . Shlaer, J. Gen. Physiol. 21, 165 (1937)
  12. We have derived by the method of averages from our data and (Eq. (3) a value of 0.0670 for b and of 0.00906 for K. The theoretical curve drawn through the points of Fig. 2 is the equation a α·τ=0.0670[1+1/(0.00906I)½]2.
  13. C. H. Graham and R. Margaria, Am. J. Physiol. 113, 299 (1935); and H. W. Karn, J. Gen. Psychol. 14, 360 (1936).

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