Relative numerical middle in rhesus monkeys.

Relative numerical middle in rhesus monkeys.
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DOI:
10.1098/rsbl.2021.0426
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发表时间:
2022-03
期刊:
影响因子:
3.3
通讯作者:
Brannon EM
Brannon EM
中科院分区:
生物学2区
文献类型:
--
作者:
Rugani R;Platt ML;Chen Z;Brannon EM

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动物在需要序数和基数数字表征的任务中表现出巨大的数字能力,但很少有研究涉及动物是否可以识别序列中的数字中间。两只恒河猴(Macaca mulatta)学会了在触摸屏上选择一个由三个点组成的水平序列中的中间点。当随后呈现由5、7或9个项目组成的较长序列时,猴子转移了中间规则。准确性随着序列长度的增加而降低。在第二个测试中,我们向猴子展示了由9个项目组成的不对称序列,其中数字和空间中间是不同的,两只猴子都选择了数字中间而不是空间中间。我们的研究结果表明,恒河猴可以提取一个抽象的数字规则平分一组离散的项目。
Animals show vast numerical competence in tasks that require both ordinal and cardinal numerical representations, but few studies have addressed whether animals can identify the numerical middle in a sequence. Two rhesus monkeys (Macaca mulatta) learned to select the middle dot in a horizontal sequence of three dots on a touchscreen. When subsequently presented with longer sequences composed of 5, 7 or 9 items, monkeys transferred the middle rule. Accuracy decreased as the length of the sequence increased. In a second test, we presented monkeys with asymmetrical sequences composed of nine items, where the numerical and spatial middle were distinct and both monkeys selected the numerical middle over the spatial middle. Our results demonstrate that rhesus macaques can extract an abstract numerical rule to bisect a discrete set of items.
DOI: 10.1371/journal.pone.0090373
发表时间: 2014
期刊: PloS one
影响因子: 3.7
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