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Brightness discrimination for varying durations of the just discriminable increment

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Summary

Hecht’s equation for brightness discrimination adequately accounts for results obtained with a constant duration of ΔI. When the duration of ΔI is varied, the constants of the equation assume different values.

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References

  1. Hecht, S. A theory of visual intensity discrimination. J. Gen. Physiol., 1935, 18, 767–789.

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  2. Hartline, H. K. Intensity and duration in the excitation of single photoreceptor units. J. Cell. Compar. Physiol., 1934, 5, 229–247.

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  3. Smith, J. R. Spatial and binocular effects in human intensity discrimination. J. Gen. Psychol., 1936, 14, 318–345.

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  4. Graham, C. H., & Granit, R. Comparative studies in the peripheral and central retina. VI. Amer. J. Physiol., 1931, 98, 664–673.

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Authors and Affiliations

  1. Psychological Laboratories, Brown University, Providence, USA

    C. H. Graham, R. H. Brown & J. R. Smith

  2. Clark University, Worcester, USA

    C. H. Graham, R. H. Brown & J. R. Smith

Authors
  1. C. H. Graham
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  2. R. H. Brown
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  3. J. R. Smith
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Graham, C.H., Brown, R.H. & Smith, J.R. Brightness discrimination for varying durations of the just discriminable increment. Psychol Rec 1, 229–233 (1937). https://doi.org/10.1007/BF03393203

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  • DOI: https://doi.org/10.1007/BF03393203

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