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Spectral sensitivity of human visual pathway and its clinical application 1. increment threshold spectral sensitivity of normal subjects


, : Spectral sensitivity of human visual pathway and its clinical application 1. increment threshold spectral sensitivity of normal subjects. Nippon Ganka Gakkai Zasshi 86(2): 197-202

Clinical test on opponent-color system is useful for the early diagnosis of acquired [human] retinal diseases as well as congenital color defects. A clinical use for this practical method was determined. A circular 1.2.degree. test flash was projected from behind on a translucent thin plate; this was constanty illuminated by background circular 8.degree., white or yellow light. Using a white background (1000 td [target density] and 5,900.degree. K) and 40 ms test flashes, a normal spectral sensitivity curve was obtained. This curve had 3 peaks, near 440, 540 and 600 nm. Test flashes of 200 ms disclosed 3 peaks which were clearly more normal. Yellow background light (1200 td) and 200 ms test flashes were the best combinations to obtain the sensitivity curve of opponent-color channels.

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Nakai, Y., 1982: Spectral sensitivity of human visual pathway and its clinical application. Part I. Increment-threshold spectral sensitivity of the normal subjects. Nippon Ganka Gakkai Zasshi 86(2): 197-202

Nakai, Y., 1982: Spectral sensitivity of human visual pathway and its clinical application 2. increment threshold spectral sensitivity of eyes with retinal detachment. Spectral sensitivity was measured on 108 [human] eyes with rhegmatogenous retinal detachment using a previously described method. In cases of foveal detachment with good vision (> 0.8) only the blue cone system was affected. The red and green c...

Nakai, Y., 1982: Spectral sensitivity of human visual pathway and its clinical application. Part 2. Increment-threshold spectral sensitivity of the eyes with retinal detachment. Nippon Ganka Gakkai Zasshi 86(2): 203-210

Sato, M.; Uchikawa, K., 1999: Increment-threshold spectral sensitivity during saccadic eye movements in uniform visual field. We measured increment-threshold spectral sensitivity functions during saccades, immediately after saccades and during fixation. A uniform white background field which covered observer's whole visual field prevented any retinal masking effects...

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Sperling, H.G.; Sidley, N.A.; Dockens, W.S.; Jolliffe, C.L., 1968: Increment-threshold spectral sensitivity of the rhesus monkey as a function of the spectral composition of the background field. Increment-threshold spectral sensitivity was measured on rhesus monkeys. Homogeneous 2CT backgrounds were used, illuminated by a planckian radiator (2854*K white) producing 3000 trolands retinal illuminance and also that white plus an intense spec...

Nuboer J.F.W.; Moed P.J., 1983: Increment threshold spectral sensitivity in the rabbit. Increment threshold measurements in wild rabbits give rise to spectral sensitivity curves that are unimodal or bimodal in nature, depending on the background luminance. A model that explains the shape of these curves on the basis of synergistic an...

Powers M.K.; Schneck M.; Teller D.Y., 1981: Spectral sensitivity of human infants at absolute visual threshold. The forced-choice preferential looking technique (FPL) was used in conjunction with an infrared television viewing system to measure the dark-adapted visual sensitivity of human infants at 1 and 3 mo. of age. Absolute thresholds of 1 mo. olds were...

Harwerth, R.S.; Levi, D.M., 1977: Increment threshold spectral sensitivity in anisometropic amblyopia. Increment threshold spectral sensitivity curves were determined for amblyopic and non-amblyopic [human] eyes with 4 adapting field intensity levels. The sensitivity of the amblyopic eye compared to the non-amblyopic eye was lower across the entire...

Jacobs, G.H., 1972: Increment-threshold spectral sensitivity in the squirrel monkey. Journal of Comparative and Physiological Psychology 79(3): 425-431