Functional Alteration of Visual Receptor Units and Retinal Pigments by X-irradiation

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US Army Medical Research Laboratory, 1965 - 1 pages
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Single functional receptor units from the compound eyes of 40 Limulus polyphemus were examined for visible light and x-ray ''phosphene'' responses similar to thos previously reported in electroretinogram studies of the whole retina. ''Phosphene'' responses were readily observed in winter animals but were infrequently seen in animals collected during the spring. Doses of X-rays many times those required to produce ERG ''phosphenes'' were ineffective in reducing the level of dark adaptation. However, reduced light response latency and reduced light threshold were consistently observed during X-ray exposure. (Author).

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