How dogs navigate to catch frisbees
How dogs navigate to catch frisbees
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DOI：
10.1111/j.0956-7976.2004.00698.x
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发表时间：
2004-07-01
影响因子：
8.2
通讯作者：
McBeath, MK
中科院分区：
文献类型：
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作者：
Shaffer, DM;Krauchunas, SM;McBeath, MK
我们在两只狗的头上安装了微型摄像机，检查了它们在接飞盘时的光学行为。我们的研究结果表明，狗使用与棒球运动员相同的基于观察者的导航启发法（即沿着线性光学轨迹LOT保持目标，并且光学速度恒定）。在飞盘急剧改变方向的试验中，狗保持了速度恒定的 LOT，直到它明显无法再这样做，然后简单地建立了新的 LOT 和光速，直到被拦截。这项工作演示了如何使用简单的控制机制，利用不变的几何属性来完成拦截任务。它证实了一种跨物种和复杂目标轨迹的通用拦截策略。
Using micro-video cameras attached to the heads of 2 dogs, we examined their optical behavior while catching Frisbees. Our findings reveal that dogs use the same viewer-based navigational heuristics previously found with baseball players (i.e., maintaining the target along a linear optical trajectory, LOT, with optical speed constancy). On trials in which the Frisbee dramatically changed direction, the dog maintained an LOT with speed constancy until it apparently could no longer do so and then simply established a new LOT and optical speed until interception. This work demonstrates the use of simple control mechanisms that utilize invariant geometric properties to accomplish interceptive tasks. It confirms a common interception strategy that extends both across species and to complex target trajectories.