A. Stockman et al., SPECTRAL SENSITIVITIES OF THE HUMAN CONES, Journal of the Optical Society of America. A: Optics and image science, 10(12), 1993, pp. 2491-2521
Citations number
122
Categorie Soggetti
Optics
Journal title
Journal of the Optical Society of America. A: Optics and image science
Transient chromatic adaptation produced by an abrupt change of backgro
und color permits an easier and closer approach to cone isolation than
does steady-state adaptation. Using this technique, we measured middl
e-wave-sensitive (M-) cone spectral sensitivities in 11 normals and 2
protanopes and long-wavelength-sensitive (L-) cone spectral sensitivit
ies in 12 normals and 4 deuteranopes. Although there is great individu
al variation in the adapting intensity required for effective isolatio
n, there is little variation in the shape of the M- and L-cone spectra
l-sensitivity functions across subjects. At middle and long wavelength
s, our mean spectral sensitivities agree extremely well with dichromat
ic spectral sensitivities and with the M- and L-cone fundamentals of S
mith 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-degrees color-matching functions (CMF's). But the agreement
with the M-cone fundamentals of Estevez [Ph.D. dissertation, Amsterda
m University (1979)] and of Vos et al. [Vision Res. 30, 936 (1990)], w
hich are based on the Stiles-Burch 2-degrees CMF's, is poor. Using our
spectral-sensitivity data, tritanopic color-matching data, and Stiles
's pi3, we derive new sets of cone fundamentals, The consistency of th
e proposed fundamentals based on either the Stiles-Burch 2-degrees CMF
s or the CIE 10-degrees large-field CMF's with each other, with protan
opic and deuteranopic spectral sensitivities, with tritanopic color-ma
tching data, and with short-wavelength-sensitive (S-) cone spectral-se
nsitivity data suggests that they are to be perferred over fundamental
s based on the CIE 2-degrees CMF's.