Effects of kinesthetic information from body movements on accuracy in perception and cognition of object motion

身体运动的动觉信息对物体运动感知和认知准确性的影响

• 批准号: 17500394
• 负责人: TANAKA Hideyuki
• 金额: $ 1.95万
• 依托单位: Tokyo University of Agriculture and Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2005
• 资助国家: 日本
• 起止时间: 2005 至 2007
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17500394/
• 关键词: proprioception; vision; tracking; position estimation; motor behavior; sensorimotor representation; visual representation; 追跡運動; 追跡課題; 知覚-連動連関

We investigated the relative importance of vision and proprioception in estimating target locations in a dynamic environment. Subjects performed a position estimation task in which a target moved horizontally on a screen at a constant velocity and then disappeared. Study results indicate that proprioceptive localization of the hand included systematic biases under dynamic conditions. When visual feedback was not given, the hand tended to overshoot target positions during tracking movements. This characteristic is approximately similar to those in past studies using hitting or reaching tasks. In the other experiments, study participants significantly underestimated their actual hand displacements without visual feedback, if they were asked to estimate the dynamic hand position in visual space. There seems to be a strong relationship between these two phenomena. Overshooting the target position in such a motor task would be attributed to underestimation of own hand movements, but not overestimation of target movements. In fact, study participants consistently underestimated the target displacements, even when the overshooting behaviours took place. These findings lead us to hypothesize that while humans are consciously aware of the position change of the various parts of the limb during ongoing movement without vision, the brain might interpret the limb movement as if more distal end of the limb (e.g., hand or the tip of finger) transferred less than it actually did relative to the extrapersonal space. So we need to know why estimates of the dynamic hand position are biased toward as if the extent of limb movement is reduced, but not extended. Moreover, for attainment of a motor task interacting with an object, how do people adjust or correct, in conscious or subconscious level, errors in estimation of their hand movements that could occur as they more rely on proprioceptive information. These problems remain to be examined in future studies.

我们研究了视力和本体感受在估计动态环境中估计目标位置的相对重要性。受试者执行了一个位置估计任务，其中目标以恒定速度在屏幕上水平移动，然后消失。研究结果表明，手的本体感受性定位包括在动态条件下的系统偏见。当没有给出视觉反馈时，手动在跟踪运动过程中倾向于超出目标位置。这种特征与使用击球或达到任务的过去研究中的特征大致相似。在其他实验中，如果要求他们在视觉空间中估算动态手部位置，则研究参与者显着低估了他们的实际手部位移而没有视觉反馈。这两种现象之间似乎存在牢固的关系。在这种电动机任务中对目标位置的过射将归因于低估了自己的手势，而不是高估目标运动。实际上，即使发生了过度射击行为，研究参与者也始终低估了目标位移。这些发现使我们假设人类有意识地意识到在没有视力的持续运动过程中肢体各个部位的位置变化，但大脑可能会解释肢体运动，好像是肢体的远端（例如，手或手手指的尖端的转移比实际相对于人外空间的实际转移少。因此，我们需要知道为什么动态手位置的估计值偏向偏见，好像肢体运动的程度减小，但不会扩展。此外，为了达到与对象相互作用的电动机任务，人们如何在有意识或潜意识的水平上调整或纠正，在估计其手势的错误时，由于他们更依赖于本体感知性信息，因此可能发生的手势。这些问题在以后的研究中仍有待研究。

项目成果

Contributions of vision-proprioception interaction to the position estimates of a moving hand and target

视觉本体感觉交互对移动的手和目标的位置估计的贡献

• 发表时间: 2006
• 作者: Hideyuki;Tanaka;田中秀幸
• 通讯作者: 田中秀幸

How accurate can we estimate time-varying hand locations without vision?

在没有视觉的情况下，我们能够准确地估计随时间变化的手部位置吗？

• 发表时间: 2007
• 作者: Tanaka;H;Worringham;C;Kerr;G.K.;田中秀幸
• 通讯作者: 田中秀幸

Contributions of vision-proprioception interaction to the position estimates of a moving hand and target.

视觉本体感觉交互对移动的手和目标的位置估计的贡献。

• 发表时间: 2006
• 期刊: Book of Abstracts for 11^<th> Annual Congress of the European College of Sport Science
• 作者: Tanaka;H;Worringham;C;Kerr;G.K.
• 通讯作者: G.K.