The cognitive foundation for object manipulation:the experiment with degu.

在这项研究中，我们研究了可能的能力，啮齿动物，德古（degu）分层联合收割机多个对象构建一个自我嵌入的结构。实验前，针对德古的生理缺陷，对实验装置--巢杯进行了改进。我们通过循序渐进的训练程序来训练迪格斯操作杯子。在分析这些数据时，我们采用Hayashi（2007）的符号系统，以序列代码的形式描述巢杯任务中的操作。作为分析的结果，degus在操作巢杯时的策略变化被证明与黑猩猩相似。最后，德谷用锅法操作了四个杯子，但他们从未使用过组装法。我们的实验结果表明，最发达的方法是degus锅的方法。

In this study, we examined the possible ability of a rodent, degu (Octodon degu)to hierarchically combine multiple objects to construct a self-embedded structure. Before experiment, experimental apparatus, nesting-cup, were improved to make up for degu's physical disadvantage. We trained degus to manipulate cups by step-by step training procedure. In analyzing these data, we adopted the notation system for describing manipulation in nesting-cup tasks in the form of sequential codes as Hayashi (2007).As a result of this analysis, the change of strategy by degus in manipulating nesting-cup was proved to be similar with that by chimpanzee. Finally, degu operated four cups by the pot method, but they have never used the subassembly method. Our results experimentally demonstrated that the most developed method of degus was the pot method.