The spectral sensitivity of the human short-wavelength sensitive cones derived from thresholds and color matches.
We used two methods to estimate short-wave (S) cone spectral sensitivity. Firstly, we measured S-cone thresholds centrally and peripherally in five trichromats, and in three blue-cone monochromats, who lack functioning middle-wave (M) and long-wave (L) cones. Secondly, we analyzed standard color-matching data. Both methods yielded equivalent results, on the basis of which we propose new S-cone spectral sensitivity functions. At short and middle-wavelengths, our measurements are consistent with the color matching data of Stiles and Burch (1955, Optica Acta, 2, 168-181; 1959, Optica Acta, 6, 1-26), and other psychophysically measured functions, such as pi 3 (Stiles, 1953, Coloquio sobre problemas opticos de la vision, 1, 65-103). At longer wavelengths, S-cone sensitivity has previously been over-estimated.
Stockman
A
A
Department of Psychology, University of California San Diego, La Jolla 92093-0109, USA. astockman@ucsd.edu
Sharpe
L T
LT
Fach
C
C
D003118:Color Perception / Q000502:physiology*; D006801:Humans; D008266:Macula Lutea; D008297:Male; D011601:Psychophysics; D017949:Retinal Cone Photoreceptor Cells / Q000502:physiology*; D012168:Retinal Pigments / Q000032:analysis; D012684:Sensory Thresholds / Q000502:physiology; D013053:Spectrophotometry
D012168:Retinal Pigments