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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 72, Iss. 4 — Apr. 1, 1982
  • pp: 517–518

Comparison of flicker-photometric and flicker-threshold spectral sensitivities while the eye is adapted to colored backgrounds

A. Eisner  »View Author Affiliations


JOSA, Vol. 72, Issue 4, pp. 517-518 (1982)
http://dx.doi.org/10.1364/JOSA.72.000517


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Abstract

With the eye adapted to (representative) colored backgrounds, 15-Hz flicker photometry and flicker thresholds yielded spectral-sensitivity curves identical within error. Flicker photometry is the more precise measure.

© 1982 Optical Society of America

Citation
A. Eisner, "Comparison of flicker-photometric and flicker-threshold spectral sensitivities while the eye is adapted to colored backgrounds," J. Opt. Soc. Am. 72, 517-518 (1982)
http://www.opticsinfobase.org/josa/abstract.cfm?URI=josa-72-4-517


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References

  1. A. Eisner and D. I. A. MacLeod, "Flicker photometric study of chromatic adaptation: selective suppression of cone inputs by colored backgrounds," J. Opt. Soc. Am. 71, 705–718 (1981).
  2. M. H. Bornstein and L. E. Marks, "Photopic luminosity measured by the method of critical frequency," Vision Res. 12, 2023–2033 (1972).
  3. H. E. Ives, "Studies in the photometry of lights of different colors II. Spectral luminosity curves by the method of critical frequency," Philos. Mag. 24, 352–370 (1912).
  4. The first and third backgrounds were used in Ref. 1. The second differs in retinal illuminance because of changes in lamp output over time. Three rather than four flicker threshold measures were taken at the original background illuminance; FPS(λ) equaled FTS(λ) within (small) error.
  5. FPS(λ) and FTS(λ) have been scaled to minimize their rms difference summed over test wavelengths. This in effect results in a comparison of the shapes of the curves.
  6. For any given background the relative sensitivities from each session were scaled to minimize between-session disagreement before computing the between-session SEM. For flicker thresholds, the remaining variability is variability in the shape of the spectral-sensitivity curve and not in absolute sensitivity.
  7. L. E. Marks and M. H. Bornstein, "Spectral sensitivity by constant CFF: effect of chromatic adaptation," J. Opt. Soc. Am. 63, 220–226 (1973).
  8. This effect is quantitively analyzed in A. Eisner, "The contribution of the different cone types to luminance while the eye is adapted to colored backgrounds," Ph.D. thesis (University of California at San Diego, La Jolla, California, 1979), Chap. 3, Appendix.

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