Abstract

<p>The precision of depth discrimination has been measured in a two-rod test apparatus involving real-depth cues. The effects of two variables have been studied: (a) the level of equal retinal illuminance presented to the two eyes; and (b) the difference in the level of the retinal illuminance presented to the two eyes. It has been found that depth discrimination in this test varies as a function of the level of equal retinal illuminance presented to the two eyes in much the same way that acuity or intensity discrimination vary with luminance. Stereoscopic threshold angles vary more than 19:1 over some five log units of variation in illuminance.</p> <p>Unequal retinal illuminance presented to the two eyes at any given illuminance level has a comparatively small deleterious effect upon the precision of depth discrimination. This effect progressively increases as the inequality of retinal illuminance is increased.</p> <p>These results have significance for photochemical theories of vision and for the classical theory of binocular space discrimination.</p>

PDF Article

References

  • View by:
  • |
  • |

  1. W. A. Nagel, Z. Psychol. 27, 264–266 (1902).
  2. C. G. Mueller and V. V. Lloyd, Proc. Natl. Acad. Sci. (U. S.) 34, 223–227 (1948).
  3. S. Hecht, Physiol. Revs. 17, 239–290 (1937).
  4. K. N. Ogle and J. Groch, Arch. Ophthalmol. (Chicago) 56, 878–895 (1956).
  5. A. Lit and A. Hyman, Am. J. Optom. 28, 564–580 (1951).
  6. H. J. Howard, Am. J. Ophthalmol. 2, 656–675 (1919).
  7. C. H. Graham, Handbook of Experimental Psychology, edited by S. S. Stevens (John Wiley & Sons, Inc., New York, 1951), p. 888.
  8. S. Hecht and E. U. Mintz, J. Gen. Physiol. 22, 593–612 (1939).

Graham, C. H.

C. H. Graham, Handbook of Experimental Psychology, edited by S. S. Stevens (John Wiley & Sons, Inc., New York, 1951), p. 888.

Groch, J.

K. N. Ogle and J. Groch, Arch. Ophthalmol. (Chicago) 56, 878–895 (1956).

Hecht, S.

S. Hecht, Physiol. Revs. 17, 239–290 (1937).

S. Hecht and E. U. Mintz, J. Gen. Physiol. 22, 593–612 (1939).

Howard, H. J.

H. J. Howard, Am. J. Ophthalmol. 2, 656–675 (1919).

Hyman, A.

A. Lit and A. Hyman, Am. J. Optom. 28, 564–580 (1951).

Lit, A.

A. Lit and A. Hyman, Am. J. Optom. 28, 564–580 (1951).

Lloyd, V. V.

C. G. Mueller and V. V. Lloyd, Proc. Natl. Acad. Sci. (U. S.) 34, 223–227 (1948).

Mintz, E. U.

S. Hecht and E. U. Mintz, J. Gen. Physiol. 22, 593–612 (1939).

Mueller, C. G.

C. G. Mueller and V. V. Lloyd, Proc. Natl. Acad. Sci. (U. S.) 34, 223–227 (1948).

Nagel, W. A.

W. A. Nagel, Z. Psychol. 27, 264–266 (1902).

Ogle, K. N.

K. N. Ogle and J. Groch, Arch. Ophthalmol. (Chicago) 56, 878–895 (1956).

Other (8)

W. A. Nagel, Z. Psychol. 27, 264–266 (1902).

C. G. Mueller and V. V. Lloyd, Proc. Natl. Acad. Sci. (U. S.) 34, 223–227 (1948).

S. Hecht, Physiol. Revs. 17, 239–290 (1937).

K. N. Ogle and J. Groch, Arch. Ophthalmol. (Chicago) 56, 878–895 (1956).

A. Lit and A. Hyman, Am. J. Optom. 28, 564–580 (1951).

H. J. Howard, Am. J. Ophthalmol. 2, 656–675 (1919).

C. H. Graham, Handbook of Experimental Psychology, edited by S. S. Stevens (John Wiley & Sons, Inc., New York, 1951), p. 888.

S. Hecht and E. U. Mintz, J. Gen. Physiol. 22, 593–612 (1939).

Cited By

OSA participates in CrossRef's Cited-By Linking service. Citing articles from OSA journals and other participating publishers are listed here.

Alert me when this article is cited.