Coordination of Action in Distributed, but Unequal, Bimanual Tasks

协调分布式但不平等的双手任务中的行动

• 批准号: 2341539
• 负责人: Wilsaan Joiner
• 金额: $ 50万
• 依托单位: University of California-Davis
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2024
• 资助国家: 美国
• 起止时间: 2024-05-01 至 2027-04-30
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2341539&HistoricalAwards=false
• 关键词: Coordination; Action; Distributed; but; Unequal

Many activities require our hands to work together but the way they coordinate differs depending on the task. For example, when hammering a nail, one hand must stabilize the nail while the other swings the hammer. When opening a jar, the hands need to exert pressure in different directions and our grip adjusts based on the size and texture of the surface that is gripped. Both these activities require the hands to have different responsibilities and movements, but the hands must cooperate to accomplish the task. This project explores how cooperative bimanual control is learned and how the coordination adjusts when the requirements change. The findings should be informative for rehabilitation after stroke, especially for the many activities of daily living that rely on bimanual asymmetric movements, as well as for optimal design of human-machine interfaces. In addition, planned classroom demonstrations and workshops provide local elementary school students with robotics experiences during the school year and in the summer. Bimanual tasks typically involve an unequal distribution of control, with the two limbs having complementary responsibilities and motor functions. Although there is a growing literature on the neural processes involved when learning new motor patterns using one limb, there is a substantial gap in our understanding of how the two hands coordinate control in accomplishing a single task, particularly when the required motor functions are not the same. The investigators use a novel motor coordination task that requires the two limbs to control different aspects of a single virtual object. This allows them to explore how perturbations of one feature of the coordinated task influence the behavior of the other, unperturbed limb. Other conditions probe the relationships between motor actions and the perception of coordinated control (i.e., the sense of agency). By quantifying these changes in behavior, these studies provide a deeper understanding of how we accomplish daily activities that require different, but synchronized motor functions from the two hands (e.g., chopping food, fastening buttons, etc.) and will provide a foundation for studying how the brain controls bimanual actions.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

许多活动需要我们的双手一起工作，但它们的协调方式因任务而异。例如，当敲钉子时，一只手必须固定钉子，而另一只手则摆动锤子。当打开一个罐子时，双手需要向不同的方向施加压力，我们的抓地力会根据被抓地力表面的大小和质地进行调整。这两种活动都需要双手承担不同的职责和动作，但双手必须配合才能完成任务。本项目探讨了协作式手动控制是如何学习的，以及当需求发生变化时，协调是如何调整的。这一发现对于中风后的康复，特别是对于依赖于双手不对称运动的日常生活活动，以及人机界面的优化设计，应该是有帮助的。此外，计划中的课堂演示和研讨会在学年和夏季为当地小学生提供机器人体验。双手活动通常涉及不平等的控制分配，两个肢体具有互补的责任和运动功能。尽管关于单肢学习新运动模式所涉及的神经过程的文献越来越多，但我们对两只手在完成单一任务时如何协调控制的理解仍存在很大差距，特别是当所需的运动功能不相同时。研究人员使用了一种新颖的运动协调任务，要求两个肢体控制单个虚拟物体的不同方面。这使他们能够探索协调任务的一个特征的扰动如何影响另一个未受干扰的肢体的行为。其他条件探讨运动动作和协调控制知觉之间的关系（即代理感）。通过量化这些行为变化，这些研究提供了我们如何完成日常活动的更深层次的理解，这些活动需要两只手的不同但同步的运动功能（例如，切食物，扣纽扣等），并将为研究大脑如何控制双手动作提供基础。该奖项反映了美国国家科学基金会的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。