Abstract
Squirrel monkeys were exposed to methylmercuric chloride in various doses (0.0, 2.0, 3.0, 4.0 mg/animal or 3.0, 4.5, 6.0 mg/kg) and observed for general behavioral changes, electrophysiological changes, and quantitative changes in a Wisconsin General Test Apparatus (WGTA). Animals receiving high, medium, and low doses (6.0 mg/kg, 4.0 mg/animal, 4.5 mg/kg, and 3.0 mg/animal) showed signs of mercury poisoning including diminished activity, decreased food consumption, increased errors, latency, and duration in the WGTA, motor problems, and blindness. Electroretinograms (ERG) of blind and sighted animals were unimpaired. Severity of mercury poisoning was related to behavioral effects.
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