View-based strategy for reorientation by geometry
View-based strategy for reorientation by geometry
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DOI：
10.1242/jeb.043315
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发表时间：
2010-09-01
影响因子：
2.8
通讯作者：
Vallortigara, Giorgio
中科院分区：
文献类型：
--
作者：
Pecchia, Tommaso;Vallortigara, Giorgio
人类和非人类动物可以使用几何信息（度量信息和左右辨别感）来重新定位自己在环境中的位置。在这样做的假设，他们依赖于allocentric（地图般的）表示已获得广泛的共识。然而，理论模型表明，以自我为中心的表示可能是视觉空间导航的有效策略。在这里，我们首次提供证据表明，动物有效地使用基于视图的策略来重新定位自己在一系列地标。家养小鸡被训练在一个由四个不可区分或独特的管道组成的矩形阵列中找到食物奖励。在关键的实验系列中，管道有四个开口，其中只有一个允许小鸡获得奖励。在整个训练过程中，开放通道相对于阵列的方向要么保持稳定，要么改变。在两种训练条件下，阵列中管道的相对位置保持稳定。小鸡重新定向根据几何形状，只要开放的访问指向相同的方向在训练过程中，但失败时，开口的位置在整个训练过程中改变。当正确的管道的特点是由一个独特的特征线索，小鸡学会了定位的奖励，而不考虑的方向开口的稳定性，这表明，位置导航是分离的非空间学习。这些发现提供了证据，基于视图的策略，重新定位的几何形状可以被动物使用。
Human and non-human animals can use geometric information (metric information and left-right discrimination sense) to reorient themselves in an environment. The hypothesis that in so doing they rely on allocentric (map-like) representations has received wide consensus. However, theoretical models suggest that egocentric representations may represent efficient strategies for visuo-spatial navigation. Here, we provide, for the first time, evidence that a view-based strategy is effectively used by animals to reorient themselves in an array of landmarks. Domestic chicks were trained to locate a food-reward in a rectangular array of either four indistinguishable or distinctive pipes. In the key experimental series, the pipes had four openings, only one of which allowed the chicks to access the reward. The direction of the open access relative to the array was either maintained stable or it was changed throughout training. The relative position of the pipes in the array was maintained stable in both training conditions. Chicks reoriented according to configural geometry as long as the open access pointed in the same direction during training but failed when the positions of the openings was changed throughout training. When the correct pipe was characterized by a distinctive featural cue, chicks learnt to locate the reward irrespective of the stability of the direction to openings, indicating that place-navigation was dissociated from non-spatial learning. These findings provide evidence that view-based strategies to reorient by geometry could be used by animals.