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眼动揭示了视觉信息在导航中的时空规划动态。

Eye movements reveal spatiotemporal dynamics of visually-informed planning in navigation.

机构信息

Center for Neural Science, New York University, New York, United States.

Center for Theoretical Neuroscience, Columbia University, New York, United States.

出版信息

Elife. 2022 May 3;11:e73097. doi: 10.7554/eLife.73097.

DOI:10.7554/eLife.73097
PMID:35503099
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9135400/
Abstract

Goal-oriented navigation is widely understood to depend upon internal maps. Although this may be the case in many settings, humans tend to rely on vision in complex, unfamiliar environments. To study the nature of gaze during visually-guided navigation, we tasked humans to navigate to transiently visible goals in virtual mazes of varying levels of difficulty, observing that they took near-optimal trajectories in all arenas. By analyzing participants' eye movements, we gained insights into how they performed visually-informed planning. The spatial distribution of gaze revealed that environmental complexity mediated a striking trade-off in the extent to which attention was directed towards two complimentary aspects of the world model: the reward location and task-relevant transitions. The temporal evolution of gaze revealed rapid, sequential prospection of the future path, evocative of neural replay. These findings suggest that the spatiotemporal characteristics of gaze during navigation are significantly shaped by the unique cognitive computations underlying real-world, sequential decision making.

摘要

目标导向的导航被广泛认为依赖于内部地图。尽管在许多情况下可能是这样，但人类在复杂、陌生的环境中往往依赖于视觉。为了研究视觉引导导航过程中的注视本质，我们要求人类在不同难度级别的虚拟迷宫中导航至短暂可见的目标，观察到他们在所有场景中都采取了近乎最优的轨迹。通过分析参与者的眼动，我们深入了解了他们如何进行视觉信息规划。注视的空间分布揭示了环境复杂性在注意力指向世界模型两个互补方面的程度上存在显著的权衡：奖励位置和任务相关的转换。注视的时间演变揭示了对未来路径的快速、连续的展望，这让人联想到神经再激活。这些发现表明，导航过程中注视的时空特征受到现实世界中基于序列决策的独特认知计算的显著影响。

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