REVERSAL-LEARNING DEFICITS IN YOUNG MONKEYS EXPOSED TO LEAD
REVERSAL-LEARNING DEFICITS IN YOUNG MONKEYS EXPOSED TO LEAD
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DOI：
10.1016/0091-3057(79)90326-5
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发表时间：
1979-01-01
影响因子：
3.6
通讯作者：
BOWMAN, RE
中科院分区：
文献类型：
--
作者：
BUSHNELL, PJ;BOWMAN, RE
The reversal learning capacity of young rhesus monkeys in visual discrimination tasks was examined during daily exposure to dietary lead acetate throughout the 1st yr. While not affected in physical development, all Pb-treated monkeys showed performance deficits on reversal learning tasks. These deficits were independent of Pb-induced changes in motivation. Over a series of problems, the overall learning rate of monkeys with blood Pb-concentrations in the range of 70-90 .mu.g/dl was retarded, which resulted partly from a pronounced difficulty in attaining criterion on the 1st of a series of reversals within a given problem. This latter deficit resulted from an increase in errors, balks and total trials to criterion on the 1st reversal. Monkeys exposed to blood Pb-concentrations of 40-60 .mu.g/dl required significantly more trials to finish all problems, but did not show the 1st-reversal deficit. Theoretical implications of these data were discussed.
