Comparison of Electroretinal Response to X-Rays and to Light

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Abstract
The ability of the grass frog, Rana pipiens, to elicit an electroretinogram in response to X-rays and to light has been investigated. Quantitative measurements of amplitude, latent period, rate of rise, and duration, plotted as a function of intensity of stimulus and duration of stimulus, yield three-dimensional graphs which sharply contrast the properties of the response to light and to X-rays. Although a remarkable sensitivity of the frog retina to X-rays was observed, the response, which, under certain conditions was indistinguishable from the response to light, proved to be a weaker response as judged by the various parameters measured.

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