M G Yochmowitz

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A three-light, three-lever discrete avoidance behavioral task was initiated to study the effects of a 500-675 rad neutron pulse upon performance. Eight primates performed the task for 4 h (3.5 h postexposure) on exposure day and for 4 h on each of 3 d postexposure. For the exposure day, five subjects had a decrease in correct responses, seven had increased(More)
Five Macaca mulatta were tested for performance changes following exposure to benactyzine HCl (intramuscular) at four doses ranging from 0.054 mg/kg to 1.7 mg/kg. Subjects simultaneously operated a primate equilibrium platform and responded to a multiple alternative reaction task. Performance on both the continuous and discrete tasks were progressively(More)
A discrete behavioral task was initiated to study the effects of a 300-rad variable dose rate exposure profile upon positively (food reward) and negatively (mild shock) reinforced groups of primates. Animals performed the task for 12 h. Performance decrements were readily apparent in 2 of 8 shock and 2 of 7 food animals, while delayed reaction times were(More)
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