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      Electroretinographic Response in WAG/Rij Rats after Low-Intensity Cyclic Light Exposure

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          Abstract

          In order to investigate the combined influence of age and light, the b-wave and oscillatory potentials (OPs) of the electroretinogram (ERG) were recorded in 1.5-, 7- and 12-month-old WAG/Rij rats, reared under homogenous low-intensity cyclic light exposure. Wistar albino rats of the same ages, reared under the same conditions, served as controls. The b-wave amplitude decreased, and its implicit time increased in the older age groups significantly more in WAG/Rij than in Wistar rats. Statistical analysis indicated that the b-wave amplitude is a more suitable parameter than implicit time in differentiating the ERG variations of one rat strain from the other. The added amplitude of the OPs also decreased in older age groups, but differently from the b wave. This occurred in WAG/Rij rats already at 1.5 months of age.

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          Author and article information

          Journal
          ORE
          Ophthalmic Res
          10.1159/issn.0030-3747
          Ophthalmic Research
          S. Karger AG
          0030-3747
          1423-0259
          1993
          1993
          11 December 2009
          : 25
          : 3
          : 137-144
          Affiliations
          aUniversity Eye Clinic, bInstitute of Experimental Medicine of the National Research Council, and cInstitute of Neuropsychiatry, University of Palermo, Italy
          Article
          267282 Ophthalmic Res 1993;25:137–144
          10.1159/000267282
          8336900
          © 1993 S. Karger AG, Basel

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          Page count
          Pages: 8
          Categories
          Original Paper

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