How do insects use path integration for their navigation?
How do insects use path integration for their navigation?
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DOI：
10.1007/s004220000168
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发表时间：
2000-09-01
影响因子：
1.9
通讯作者：
Collett, TS
中科院分区：
文献类型：
--
作者：
Collett, M;Collett, TS
我们结合联合收割机的实验结果，蚂蚁和蜜蜂，并建立在早期的模型，给这些昆虫如何使用路径整合导航，以及路径整合如何与其他模式的导航相互作用。路径积分的核心是累加器。这被设置为巢的初始状态，并随着昆虫的移动而更新，因此它总是报告昆虫相对于巢的当前位置。此外，使用路径整合的导航还需要一种将累加器的状态存储在重要位置以供后续调用作为目标的方法，以及一种计算通往此类目标的方向的方法。我们讨论了三种模式的路径整合可能会用于这个过程中，我们称之为矢量导航。矢量导航是在不熟悉的地形上导航或在地标不可用时导航的主要手段。在其他条件下，昆虫通常通过地标导航，而忽略矢量导航系统的输出。地标导航不会干扰累加器的更新。在地标和路径整合的使用中存在有趣的对称性。在短期内，矢量导航可以独立于地标，地标导航不需要路径集成的帮助。从长远来看，视觉地标有助于保持路径矢量导航校准，视觉地标的学习由路径整合指导。
We combine experimental findings on ants and bees, and build on earlier models, to give an account of how these insects navigate using path integration, and how path integration interacts with other modes of navigation. At the core of path integration is an accumulator. This is set to an initial state at the nest and is updated as the insect moves so that it always reports the insect's current position relative to the nest. Navigation that uses path integration requires, in addition, a way of storing states of the accumulator at significant places for subsequent recall as goals, and a means of computing the direction to such goals. We discuss three models of how path integration might be used for this process, which we call vector navigation. Vector navigation is the principal means of navigating over unfamiliar terrain, or when landmarks are unavailable. Under other conditions, insects often navigate by landmarks, and ignore the output of the vector navigation system. Landmark navigation does not interfere with the updating of the accumulator. There is an interesting symmetry in the use of landmarks and path integration. In the short term, vector navigation can be independent of landmarks, and landmark navigation needs no assistance from path integration. In the longer term, visual landmarks help keep path vector navigation calibrated, and the learning of visual landmarks is guided by path integration.