The estimation of cone spectral sensitivities

摘要

AbstractMethods for estimating the cone spectral sensitivities are reviewed (selectively). Techniques applied to the normal eye include measurement of flicker photometric sensitivity against colored backgrounds; creation of temporary artificial dichromacy by colored bleaches; observations of the afterimages of colored bleaching lights; and transient photopic saturation by flashed backgrounds. Results from these techniques agree well with cone sensitivities estimated from studies of congenital dichromats, and these estimates are further supported by appropriately comparing normal with anomalous trichromatic matches. The indicated sensitivities for red‐ and green‐sensitive cones peak at 566 and 543 nm, respectively. Factor analysis of color‐matching functions indicates normal variation of the order of 1–1.5‐nm standard