Sovrano Valeria Anna, Bisazza Angelo, Vallortigara Giorgio
Department of General Psychology, University of Padua, Via Venezia, 8, 35131, Padova, Italy.
Anim Cogn. 2007 Jan;10(1):47-54. doi: 10.1007/s10071-006-0029-4. Epub 2006 Jun 21.
It has been shown that children and non-human animals seem to integrate geometric and featural information to different extents in order to reorient themselves in environments of different spatial scales. We trained fish (redtail splitfins, Xenotoca eiseni) to reorient to find a corner in a rectangular tank with a distinctive featural cue (a blue wall). Then we tested fish after displacement of the feature on another adjacent wall. In the large enclosure, fish chose the two corners with the feature, and also tended to choose among them the one that maintained the correct arrangement of the featural cue with respect to geometric sense (i.e. left-right position). In contrast, in the small enclosure, fish chose both the two corners with the features and the corner, without any feature, that maintained the correct metric arrangement of the walls with respect to geometric sense. Possible reasons for species differences in the use of geometric and non-geometric information are discussed.
研究表明，儿童和非人类动物似乎会在不同程度上整合几何信息和特征信息，以便在不同空间尺度的环境中重新定位自己。我们训练鱼类（红尾裂鳍鱼，Xenotoca eiseni）重新定位，以在一个带有独特特征线索（蓝色墙壁）的矩形水箱中找到一个角落。然后，在特征被移动到另一相邻墙壁上后，我们对鱼进行了测试。在大水箱中，鱼选择了带有该特征的两个角落，并且还倾向于在其中选择相对于几何意义保持特征线索正确排列（即左右位置）的那个角落。相比之下，在小水箱中，鱼既选择了带有特征的两个角落，也选择了没有任何特征但相对于几何意义保持墙壁正确度量排列的角落。文中讨论了物种在使用几何和非几何信息方面存在差异的可能原因。
