Visual Regulation of Goal Directed Movement

目标定向运动的视觉调节

• 批准号: RGPIN-2016-06520
• 负责人: Lyons, James
• 金额: $ 2.04万
• 依托单位: McMaster University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2019
• 资助国家: 加拿大
• 起止时间: 2019-01-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=682968
• 关键词: Visual; Regulation; Goal; Directed; Movement

Since 2009, my lab has examined the role of practice and strategic behaviours in optimizing the speed, accuracy and energy expenditure of goal-directed reaching and aiming movements. From this work we have developed a model of motor control that posits two "component" modes of online control wherein active online control occurs much earlier than previously thought and rapidly unfolds as a function of a rapid and continuous comparison of dynamic information about limb direction/velocity to an internal representation of the expected sensory consequences of the movement. Since publication, the paper describing this model has been extremely influential averaging over 20 citations per year. The current proposal builds directly upon my research program, predicated upon developing a more complete understanding of how vision regulates human movement, by proposing 11 new studies that will allow us to continue to extend our multiple process model in new directions beyond aiming movements. Series 1 experiments will continue or our work in the visual control of limb movements by conducting experiments designed to further dissociate the visual and proprioceptive regulation of reaching and aiming. Our goal here is to link the representations associated with preplanned voluntary control to those that are automatically engaged when performing in complex environments. Series 2 experiments will begin to assess the predications of our model at more micro and macro levels. Here we propose to investigate the sensorimotor control processes that are integrated during eye-hand coordination tasks by extending our aiming work to the smaller scale interactions between multiple, secondary effector systems that contribute to larger scale motor behaviours. Series 2 experiments focus on the more macro concepts of the visual regulation of movement. The purpose of these studies is to examine how the visual consequences of action are represented at various levels in the kinematic chain during larger scale motor behaviours by exploring how the Central Nervous System coordinates the upper and lower limbs during full-body locomotion through space. Until now our research, and the influential model derived from it, has revolved around a thorough exploration of individual and task constraints associated with manual aiming movements. The proposed experiments will significantly broaden the context of the predictions of this model into human movement across other domains. These parallel streams of research, linked by a common theme of the visual regulation of movement, will provide novel and important extensions to our long term research program. This more comprehensive understanding of the nature of movement in typically developing populations has the additional potential benefits of providing insights into future studies as to how this knowledge can be applied to Canadian populations with movement disorders. **

自2009年以来，我的实验室一直在研究实践和战略行为在优化目标导向的到达和瞄准运动的速度、准确性和能量消耗方面的作用。从这项工作中，我们开发了一种运动控制模型，该模型假设了在线控制的两种“组件”模式，其中主动在线控制发生的时间比之前认为的要早得多，并且作为一种关于肢体方向/速度的动态信息与运动预期感官结果的内部表征的快速连续比较的功能迅速展开。自发表以来，描述该模型的论文具有极大的影响力，平均每年引用超过20次。目前的提案直接建立在我的研究项目上，基于对视觉如何调节人类运动的更全面的理解，通过提出11项新的研究，使我们能够继续将我们的多过程模型扩展到新的方向，而不是瞄准运动。系列1实验将继续进行肢体运动的视觉控制，通过进一步分离视觉和本体感觉对到达和瞄准的调节。我们的目标是将与预先计划的自愿控制相关的表示与那些在复杂环境中执行时自动参与的表示联系起来。系列2实验将开始在更微观和宏观的水平上评估我们的模型的预测。在这里，我们建议通过将我们的目标工作扩展到有助于大规模运动行为的多个次要效应系统之间的较小规模的相互作用，来研究在手眼协调任务中集成的感觉运动控制过程。系列2实验侧重于运动视觉调节的更宏观的概念。这些研究的目的是通过探索中枢神经系统在全身空间运动过程中如何协调上肢和下肢，来研究在更大规模的运动行为中，动作的视觉后果是如何在运动链的各个层面上表现出来的。到目前为止，我们的研究，以及由此衍生的有影响力的模型，一直围绕着与手动瞄准运动相关的个人和任务约束的深入探索。提出的实验将显著拓宽该模型的预测背景，使其跨越其他领域进入人类运动领域。这些平行的研究流，由运动的视觉调节这一共同主题联系在一起，将为我们的长期研究计划提供新颖而重要的扩展。这种对典型发展中人群运动性质的更全面的理解有额外的潜在好处，可以为未来的研究提供见解，以便将这些知识应用于加拿大运动障碍人群。**