Movement Improves the Quality of Temporal Perception and Decision-Making
Movement Improves the Quality of Temporal Perception and Decision-Making
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DOI：
10.1523/eneuro.0042-19.2019
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发表时间：
2018-06
期刊：
影响因子：
3.4
通讯作者：
M. Wiener;Weiwei Zhou;F. Bader;Wilsaan M. Joiner
中科院分区：
文献类型：
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作者：
M. Wiener;Weiwei Zhou;F. Bader;Wilsaan M. Joiner
移动的生物体必须能够精确地确定何时何地移动，这是行为的一个关键方面。因此，更好地理解精确运动时间和行动规划的机制对于理解我们如何与周围的世界互动至关重要。最近的证据表明，我们的时间经验是直接和内在的运动系统内计算，符合具身认知理论。为了研究运动系统的作用，我们测试了人类受试者（n = 40）在一个新的任务相结合的达到和时间估计。在这项任务中，受试者被要求移动一个机器人manipulgiant到两个物理位置之一，以分类一个同时计时的超秒。至关重要的是，受试者被分为两组：一组在刺激间隔期间的运动不受限制，另一组在刺激间隔结束之前限制他们的运动。我们的研究结果显示，自由活动组的受试者的精确度更高。进一步的实验（n = 14）证实，这些发现不是由于接近目标，计数策略，偏见，或运动长度。最后一个实验（n = 10）复制这些研究结果使用内的主题设计，执行时间再现任务，在编码的时间间隔期间的运动导致更精确的性能。我们的研究结果表明，时间估计可以在运动系统中实例化，作为对时间判断和信心的持续读出。
Abstract A critical aspect of behavior is that mobile organisms must be able to precisely determine where and when to move. A better understanding of the mechanisms underlying precise movement timing and action planning is therefore crucial to understanding how we interact with the world around us. Recent evidence suggests that our experience of time is directly and intrinsically computed within the motor system, consistent with the theory of embodied cognition. To investigate the role of the motor system, we tested human subjects (n = 40) on a novel task combining reaching and time estimation. In this task, subjects were required to move a robotic manipulandum to one of two physical locations to categorize a concurrently timed suprasecond. Critically, subjects were divided into two groups: one in which movement during the interval was unrestricted and one in which they were restricted from moving until the stimulus interval had elapsed. Our results revealed a higher degree of precision for subjects in the free-moving group. A further experiment (n = 14) verified that these findings were not due to proximity to the target, counting strategies, bias, or movement length. A final experiment (n = 10) replicated these findings using a within-subjects design, performing a time reproduction task, in which movement during encoding of the interval led to more precise performance. Our findings suggest that time estimation may be instantiated within the motor system as an ongoing readout of timing judgment and confidence.