VISUAL CONTROL OF ADAPTIVE BEHAVIOR--LOCOMOTION

自适应行为的视觉控制——运动

• 批准号: 2032880
• 负责人: WILLIAM H WARREN
• 金额: $ 11.02万
• 依托单位: BROWN UNIVERSITY
• 依托单位国家: 美国
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-02-01 至 2002-01-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/2032880
• 关键词: balance; behavioral /social science research tag; chordate locomotion; clinical research; environmental adaptation; gait; human subject; neural information processing; sensorimotor system; sensory feedback; visual pathways; visual perception

DESCRIPTION (Applicant's Abstract): The candidate for this NIMH K02 Independent Scientist Award was trained as an experimental psychologist and has performed empirical research on the visual perception of optic flow and the control of human locomotion. His long-term objective is to integrate work on perception and action in a dynamical account of visual control. Short-term career goals are to develop a strong theoretical component to his research, including modeling the neural processing of optic flow and the dynamics of visual control, and to incorporate research on perceptual-motor learning. The proposed career development plan includes a course sequence in mathematics and control theory, training in neural and dynamical modeling techniques. The award would be used to release the applicant from teaching and administrative responsibilities to devote full time to research and training. The specific aims of the proposed research are to determine how information in optic flow is extracted by the visual system and used to control balance and steering during locomotion. Four interrelated projects are proposed. The first project, on perception of heading, will determine the information used to perceive headings during observer translation and rotation, and in the presence of moving objects, using psychophysical methods. A model of this process will be formalized and tested. A project on visual control of steering will determine whether this information is used to control steering with respect to stationary and moving objects, in a joystick control task. The third project, on visual control of walking, will examine how optic flow is used to control balance and steering during treadmill walking and will model the control dynamics of the perception-action loop. The final project focuses on learning control dynamics and will investigate how an infant in a "baby bouncer" explores and learns to control the dynamics of a simple task, as a model for the acquisition of locomotion. The results would contribute to basic knowledge about the perception of optic flow and the control of locomotion, providing a foundation for clinical research on visual-motor deficits, gait disorders and mobility problems.

描述（申请人的摘要）：该NIMH K 02的候选物 独立科学家奖被训练成一名实验心理学家， 对光流的视觉感知进行了实证研究， 人类运动的控制 他的长期目标是 在视觉控制的动态描述中研究感知和行动。 短期职业目标是发展一个强大的理论组成部分，他 研究，包括模拟神经处理的光流和 视觉控制的动力学，并将感知运动的研究 学习 拟议的职业发展计划包括课程顺序 在数学和控制理论，训练神经和动态建模 技术. 该奖项将用于释放申请人从教学 和行政责任，把全部时间用于研究， 训练 拟议研究的具体目标是确定信息如何 视觉系统提取光流，并用于控制平衡 以及在运动过程中的转向。 提出了四个相互关联的项目。 第一个项目是关于航向的感知， 用于在观察者平移和旋转期间感知航向， 移动物体的存在，使用心理物理学方法。 的典范 这一进程将得到正式确定和测试。 视觉控制项目 转向将确定是否使用该信息来控制转向 在操纵杆控制任务中，相对于静止和移动物体。 第三个项目，关于行走的视觉控制，将研究光流如何 用于在跑步机行走期间控制平衡和转向， 对感知-动作回路的控制动态进行建模。 最终项目 侧重于学习控制动力学，并将调查如何在一个婴儿 “婴儿保镖”探索和学习控制一个简单任务的动态， as a model模型for the acquisition获取of movement运动. 结果将有助于 基本知识的感知光流和控制 运动，为视觉运动的临床研究提供了基础 缺陷、步态障碍和活动能力问题。