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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Vol. 10, Iss. 12 — Dec. 1, 1993
  • pp: 2491–2521

Spectral sensitivities of the human cones

Andrew Stockman, Donald I. A. MacLeod, and Nancy E. Johnson  »View Author Affiliations


JOSA A, Vol. 10, Issue 12, pp. 2491-2521 (1993)
http://dx.doi.org/10.1364/JOSAA.10.002491


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Abstract

Transient chromatic adaptation produced by an abrupt change of background color permits an easier and closer approach to cone isolation than does steady-state adaptation. Using this technique, we measured middle-wave-sensitive (M-) cone spectral sensitivities in 11 normals and 2 protanopes and long-wavelength-sensitive (L-) cone spectral sensitivities in 12 normals and 4 deuteranopes. Although there is great individual variation in the adapting intensity required for effective isolation, there is little variation in the shape of the M- and L-cone spectral-sensitivity functions across subjects. At middle and long wavelengths, our mean spectral sensitivities agree extremely well with dichromatic spectral sensitivities and with the M- and L-cone fundamentals of Smith and Pokorny [ Vision Res. 15, 161 ( 1975)] and of Vos and Walraven [ Vision Res. 11, 799 ( 1971)], both of which are based on the CIE (Judd-revised) 2° color-matching functions (CMF’s). But the agreement with the M-cone fundamentals of Estévez [ Ph.D. dissertation, Amsterdam University ( 1979)] and of Vos et al. [ Vision Res. 30, 936 ( 1990)], which are based on the Stiles–Burch 2° CMF’s, is poor. Using our spectral-sensitivity data, tritanopic color-matching data, and Stiles’s π3, we derive new sets of cone fundamentals. The consistency of the proposed fundamentals based on either the Stiles–Burch 2° CMF’s or the CIE 10° large-field CMF’s with each other, with protanopic and deuteranopic spectral sensitivities, with tritanopic color-matching data, and with short-wavelength-sensitive (S-) cone spectral-sensitivity data suggests that they are to be perferred over fundamentals based on the CIE 2° CMF’s.

© 1993 Optical Society of America

History
Original Manuscript: June 12, 1992
Revised Manuscript: June 21, 1993
Manuscript Accepted: May 24, 1993
Published: December 1, 1993

Citation
Andrew Stockman, Donald I. A. MacLeod, and Nancy E. Johnson, "Spectral sensitivities of the human cones," J. Opt. Soc. Am. A 10, 2491-2521 (1993)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-10-12-2491

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