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- W2080454927 abstract "Microelectrode, amplifier and cathode ray have been used for the recording of “spikes” of activity from isolated elements of the retina of the guinea pig in response to monochromatic light of known energy distribution. The average distribution of sensitivity to spectral light of photopic (light-adapted) and scotopic (dark-adapted) eyes suggests that visual purple is the main substance mediating sensations in this eye. These curves are given in figs. 2 and 3. Individual units of scotopic retinae follow the absorption curve for visual purple very closely. In the photopic state most units are activated by a narrow sensitivity band with the maximun of visual purple; some units respond to a narrow band with maximum in 0.530 μ. But there are also elements with maximum in the blue region around 0.460 μ. As a rule these units cannot be isolated from those with maximum in 0.500 JX. But assuming the “blue” elements to represent narrow bands of the type given by the “green” ones (maxima in 0.500 and 0.530 p.) the average photopic curve, which possesses a hump in the blue region of the spectrum, can be combined by adding up the three elementary curves in the right proportion. Thus it has become possible to give a complete description of the spectral properties of the photopic elements in the guinea pig's eye. Isolated elements are easily obtained in this eye and their reaction types have been described. The possible relation of the “blue” substance to lactoflavin and “transient orange” has been discussed. Of all retinae hitherto studied this one has the most prominent sensitivity to blue light. The author is indebted to the Rockefeller Foundation for a grant to this laboratory." @default.
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- W2080454927 date "1942-12-01" @default.
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- W2080454927 title "Spectral Properties of the Visual Receptor Elements of the Guinea Pig" @default.
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- W2080454927 doi "https://doi.org/10.1111/j.1748-1716.1942.tb01063.x" @default.
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