MECHANISMS OF SPATIAL LOCALIZATION FOR AIMED MOVEMENTS

目标运动的空间定位机制

• 批准号: 3475203
• 负责人: RICHARD A ABRAMS
• 金额: $ 8.26万
• 依托单位: WASHINGTON UNIVERSITY
• 依托单位国家: 美国
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-08-01 至 1995-07-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/3475203
• 关键词: body movement; degenerative motor system disease; eye movements; limb movement; space perception

In order to interact effectively with the world, people depend on information about the spatial locations of objects in their immediate environment. A thorough understanding of the brain mechanism and mental, processes that underlie spatial orientation will have important implications for a wide range of behaviors, and may ultimately facilitate the design of prosthetic and robotic devices, and the diagnosis and treatment of movement disorders related to mental health. The research proposed herein is directly concerned with contributing toward such an understanding. The specific objectives are to learn more about the different types of spatial information that people may use to locate a seen object, and how that information is involved in guiding movements of the eyes and limbs. To study these questions, three series of experiments will be conducted in which subjects will produce eye and limb movements to visual stimuli under a variety of different stimulus conditions, and using a variety of different types of responses. In the first series of experiments a new analytic technique will be used to evaluate kinematic features of rapid aimed limb movements. These experiments will explore the possibility that spatial information is used differently during different component phases of a single rapid movement as a function of the types of eye movements that subjects produce, the patterns of retinal stimulation they receive, the nature of the spatial information that must be retained in memory, and the physical dimensions of the movements. The second series of experiments will explore some of the factors involved in the use of spatial information to guide unspeeded limb movements. These experiments focus on learning more about the various different types of spatial information that are available for movement control. The final series of experiments extends the endeavor to saccadic eye movements, and directly compares the use of spatial information by the eye and hand. These experiments will examine kinematic features of eye movement trajectories to determine the extent to which eye and limb motor systems share the same spatial representations. Results of the proposed experiments should lead to new insights into the fundamental processes underlying various aspects of perception, cognition, and action that are relevant to spatially criented behavior. With these insights, it should be possible to better diagnose, treat, and prevent serious movement disorders related to mental health.

为了有效地与世界互动，人们依赖于 关于对象在其直接空间中的空间位置的信息 环境 对大脑机制和心理的透彻理解， 作为空间定位的基础的过程将具有重要的 影响广泛的行为，并可能最终促进 假肢和机器人设备的设计，以及诊断和 治疗与心理健康有关的运动障碍。 研究 这里提出的是直接涉及到促进这样一个 认识 具体目标是更多地了解不同类型的 人们可以用来定位所见物体的空间信息，以及如何 该信息涉及到引导眼睛和四肢的运动。 为了研究这些问题，我们将进行三组实验， 受试者将在视觉刺激下产生眼睛和肢体运动 各种不同的刺激条件，并使用各种 不同类型的响应。 在第一系列实验中， 分析技术将用于评估快速的运动学特征， 有目的的肢体运动 这些实验将探索 空间信息在不同的分量阶段期间被不同地使用 一个单一的快速运动作为眼睛运动类型的函数， 受试者产生，他们接受的视网膜刺激模式， 必须保留在记忆中的空间信息的性质，以及 运动的物理维度。 第二系列的实验 将探讨空间信息使用中涉及的一些因素 来引导未加速的肢体运动。 这些实验的重点是学习 更多关于各种不同类型的空间信息， 可用于移动控制。 最后一系列的实验 奋进扫视眼球运动，并直接比较使用 通过眼睛和手的空间信息。 这些实验将检验 眼睛运动轨迹的运动学特征，以确定 其中眼睛和肢体运动系统共享相同的空间表示。 拟议实验的结果应导致新的见解 感知，认知， 与空间行为相关的行为。 与这些 有了洞察力，应该可以更好地诊断，治疗和预防 与心理健康有关的严重运动障碍。