Saccades to future ball location reveal memory-based prediction in a virtual-reality interception task
Saccades to future ball location reveal memory-based prediction in a virtual-reality interception task
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DOI：
10.1167/13.1.20
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发表时间：
2013-01-01
影响因子：
1.8
通讯作者：
Hayhoe, Mary
中科院分区：
文献类型：
--
作者：
Diaz, Gabriel;Cooper, Joseph;Hayhoe, Mary
尽管人们普遍认为预测是感知的一个核心方面，但关于视觉预测的基础的证据相对较少。虽然扫视和追踪眼球运动都揭示了移动视觉目标未来位置的知识，但在许多这些研究中，目标沿着沿着简单的轨迹通过前平行平面移动。在这里，使用一个自然的和球拍为基础的拦截任务在虚拟环境中，我们表明，受试者作出准确的预测的视觉目标的运动，即使目标遵循的轨迹确定的复杂动态的物理相互作用和头部和身体是不受限制的。此外，我们发现，随着球弹性的变化，受试者能够准确地调整他们对球反弹后轨迹的预测。这表明，预测是由基于经验的模型指导的，该模型是关于视觉图像中的信息如何随时间变化的。
Despite general agreement that prediction is a central aspect of perception, there is relatively little evidence concerning the basis on which visual predictions are made. Although both saccadic and pursuit eye-movements reveal knowledge of the future position of a moving visual target, in many of these studies targets move along simple trajectories through a fronto-parallel plane. Here, using a naturalistic and racquet-based interception task in a virtual environment, we demonstrate that subjects make accurate predictions of visual target motion, even when targets follow trajectories determined by the complex dynamics of physical interactions and the head and body are unrestrained. Furthermore, we found that, following a change in ball elasticity, subjects were able to accurately adjust their prebounce predictions of the ball's post-bounce trajectory. This suggests that prediction is guided by experience-based models of how information in the visual image will change over time.