Taniuchi Tohru, Sugihara Junko, Wakashima Mariko, Kamijo Makiko
Graduate School of Socio-Environmental Studies, Kanazawa University, Kakuma, 920-1192, Kanazawa, Ishikawa, Japan.
Faculty of Letters, Kanazawa University, Kakuma, Kanazawa, Ishikawa, Japan.
Learn Behav. 2016 Jun;44(2):122-36. doi: 10.3758/s13420-016-0209-2.
In this study, we examined rats' discrimination learning of the numerical ordering positions of objects. In Experiments 1 and 2, five out of seven rats successfully learned to respond to the third of six identical objects in a row and showed reliable transfer of this discrimination to novel stimuli after being trained with three different training stimuli. In Experiment 3, the three rats from Experiment 2 continued to be trained to respond to the third object in an object array, which included an odd object that needed to be excluded when identifying the target third object. All three rats acquired this selective-counting task of specific stimuli, and two rats showed reliable transfer of this selective-counting performance to test sets of novel stimuli. In Experiment 4, the three rats from Experiment 3 quickly learned to respond to the third stimulus in object rows consisting of either six identical or six different objects. These results offer strong evidence for abstract numerical discrimination learning in rats.
在本研究中，我们考察了大鼠对物体数字排序位置的辨别学习。在实验1和实验2中，七只大鼠中有五只成功学会对连续六个相同物体中的第三个做出反应，并且在用三种不同的训练刺激进行训练后，这种辨别表现出对新刺激的可靠迁移。在实验3中，实验2中的三只大鼠继续接受训练，以对物体阵列中的第三个物体做出反应，该阵列包含一个奇数物体，在识别目标第三个物体时需要将其排除。所有三只大鼠都掌握了这种特定刺激的选择性计数任务，并且有两只大鼠将这种选择性计数表现可靠地迁移到了新刺激测试集。在实验4中，实验3中的三只大鼠很快学会对由六个相同或六个不同物体组成的物体行中的第三个刺激做出反应。这些结果为大鼠的抽象数字辨别学习提供了有力证据。
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