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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 67, Iss. 10 — Oct. 1, 1977
  • pp: 1354–1356

Increment thresholds, luminance, and brightness

Edward M. Brussell, John Adkins, and Stephen R. Stober  »View Author Affiliations

JOSA, Vol. 67, Issue 10, pp. 1354-1356 (1977)

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Variations in increment thresholds as a function of background intensity and/or brightness were found to depend upon the size of the incremental flash and the magnitude of blur at the edges of the conditioning field. These findings suggest that there may be more than one visual mechanism responsible for processing intensity information.

© 1977 Optical Society of America

Edward M. Brussell, John Adkins, and Stephen R. Stober, "Increment thresholds, luminance, and brightness," J. Opt. Soc. Am. 67, 1354-1356 (1977)

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  1. D. A. Burkhardt, "Brightness and the increment threshold," J. Opt. Soc. Am. 56, 979–981 (1966).
  2. J. M. Sparrock, "Stabilized images: Increment thresholds and subjective brightness," J. Opt. Soc. Am. 59, 872–874 (1969).
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  13. It should be noted that when expressed in intensity units, both the absolute and increment thresholds for the large test flash were lower than those for the small test flash. We interpret the greater increase in increment thresholds for the 1° test flash, with respect to its absolute threshold, as being due to the greater influence of lateral inhibition in the light adapted, than dark adapted eye [H. B. Barlow, R. FitzHugh, and W. S. Kuffler, "Change of organization in the receptive fields of the cat's retina during dark adaptation, "J. Physiol. (Lond.) 137, 338–354 (1957)].
  14. C. Blakemore and F. W. Campbell, "On the existence of neurones in the human visual system selectively sensitive to the orientation and size of retinal images, "J. Physiol. (Lond.) 203, 237–260 (1969).
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  17. B. G. Breitmeyer and L. Ganz, "Implications of sustained and transient channels for theories of visual pattern masking, saccadic suppression, and information processing, "Psychol. Rev. 83, 1–36 (1976).
  18. D. Kahneman, "Method, findings and theory in studies of visual masking, "Psychol. Bull. 70, 404–425 (1968).

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