GAZE AND THE VISUAL CONTROL OF FOOT PLACEMENT WHEN WALKING OVER ROUGH TERRAIN

在崎岖地形上行走时的注视和脚部放置的视觉控制

• 批准号: 10224830
• 负责人: Jonathan Samir Matthis
• 金额: $ 22.91万
• 依托单位: NORTHEASTERN UNIVERSITY
• 依托单位国家: 美国
• 财政年份: 2019
• 资助国家: 美国
• 起止时间: 2019-09-30 至 2024-06-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/10224830
• 关键词: 3-Dimensional; Aging; Algorithms; Area; Attention; Behavior; Behavioral; Biomechanics; Clinical Treatment; Cognitive; Complex; Computer Vision Systems; Development; Discipline; Environment; Eye; Gait; Goals; Human; Image; Individual; Knowledge; Link; Literature; Locomotion; Measures; Mechanics; Mentors; Modeling; Motion; Motor; Movement; Muscle; Musculoskeletal; Nature; Neuromechanics; Output; Parkinson Disease; Pattern; Phase; Photic Stimulation; Positioning Attribute; Postdoctoral Fellow; Posture; Protocols documentation; Regulation; Research; Research Activity; Research Project Grants; Research Training; Services; Signal Transduction; Specific qualifier value; Spinal; Stroke; Structure; System; Training; Training Programs; Uncertainty; Vision; Visual; Visual Fields; Walking; Wireless Technology; area MST; area MT; base; clinical Diagnosis; cost; design; environmental change; experience; experimental study; foot; gaze; insight; instrument; kinematics; multidisciplinary; neuromechanism; neuromuscular; novel; optic flow; programs; relating to nervous system; response; sensory stimulus; skills; statistics; treadmill; treatment planning; visual control; visual information; visual processing; visual stimulus; visual-motor integration

PROJECT SUMMARY & ABSTRACT Human locomotion through natural environments requires the coordination of all levels of the sensorimotor hierarchy, from the cortical areas involved in processing of visual information and high level planning to the subcortical and spinal structures involved in the regulation of the gait and posture. However, despite the complex neural bases of human locomotion, the output is highly regular and well organized around the basic physical dynamics and biomechanics that define the stability and energetic costs of moving a bipedal body through space. There is a rich and growing body of literature describing detailed knowledge each of the individual components of human locomotion, including neural mechanisms, muscular neuromechanics, and biomechanics. However, very little research exists on the way that visual input is used to dynamically control locomotion, and the overall control structure of the integrated neural and mechanical system during natural locomotion through a complex and dynamic world. This lack of integrative research not only restricts the breadth of impact of research from these individual disciplines, but also limits our ability to develop adequate treatment plans for loss of locomotor ability deriving from systems-level factors such as aging, stroke, and Parkinson’s disease. In order to to fill this critical gap in our knowledge about human locomotion, it is necessary to develop an integrated research program that examines the interactions between the visual, neural, and mechanical bases of human movement through the world. In service of this general goal, this proposal outlines research projects aimed at specific unanswered questions about locomotion over different terrains. This proposal comprises three specific research and training aims on the visual control of locomotion over rough terrain. Aim 1 focuses on the behavioral task itself, Aim 2 investigates the sensory stimulus experienced during real-world locomotion, and Aim 3 examines the motor integration of visually specified goals into the ongoing gait cycle. Aim 1 investigates effects of changing environmental uncertainty and task demands on gaze allocation strategies during locomotion over real-world rough terrain. Aim 2 analyzes and models the visual stimulus experienced during locomotion over real-world rough terrain. Aim 3 determines how visually specified target footholds and targets are integrated into the ongoing preferred steady-state gait. Together these aims will significantly advance our understanding of how humans use vision to control their movement through the natural world, which greatly increase our ability to develop clinical diagnosis and treatment for loss of locomotor function.

项目摘要和摘要 通过自然环境的人类运动需要各个级别的协调 来自涉及的视觉信息处理的皮质区域的感觉运动层次结构 以及针对与调节有关的下皮质和脊柱结构的高水平计划 步态和姿势。但是，尽管人类运动的神经底部复杂，但输出 围绕基本的物理动力学和生物力学，非常规定且组织得很好 定义将两足体通过太空移动的稳定性和能量成本。有富人 以及越来越多的文献描述详细知识的文献 人类运动，包括神经力学，肌肉神经力学和 生物力学。但是，关于视觉输入习惯的方式的研究很少 动态控制运动，以及综合神经和 通过复杂而动态世界的自然运动期间的机械系统。这个缺乏 综合研究不仅限制了这些人的研究的广度 学科，但也限制了我们制定足够治疗计划以丧失运动的能力 从系统级因素（例如衰老，中风和帕金森氏病）衍生的能力。在 为了填补我们对人类运动的了解，有必要 开发一个综合研究计划，该计划检查视觉， 神经和人类运动的机械基础。为这一将军服务 目标，该提案概述了针对有关特定问题的研究项目 在不同地形上的运动。该建议包括三个特定的研究和培训 旨在在崎terrain的地形上的运动视觉控制。 AIM 1专注于行为 任务本身，AIM 2研究了在现实世界运动中经历的感官刺激， AIM 3检查了视觉上指定的目标在正在进行的聚集周期中的电动机整合。 AIM 1调查改变环境不确定性和任务需求对目光的影响 在现实世界中崎terrain的运动期间的分配策略。 AIM 2分析和 建模在现实世界中崎terrain上的移动期间经历的视觉刺激。目标3 确定如何将视觉指定的目标牵引和目标集成到正在进行中的 首选的稳态步态。这些目标将大大提高我们对 人类如何利用视野来控制他们在自然世界中的运动，这极大地 提高我们开发临床诊断和治疗运动功能丧失的能力。