Learning Postural Dynamics In A Novel Reaching Task

在新颖的伸展任务中学习姿势动力学

• 批准号: 6886679
• 负责人: JOANN KLUZIK
• 金额: $ 4.4万
• 依托单位: HUGO W. MOSER RES INST KENNEDY KRIEGER
• 依托单位国家: 美国
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-03-01 至 2008-02-29
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6886679
• 关键词: adult human (21+); age difference; arm; behavioral /social science research tag; biomechanics; body movement; cerebellum; children; clinical research; developmental neurobiology; electromyography; human subject; learning; limb movement; neural information processing; neurophysiology; postdoctoral investigator; posture; psychological adaptation; psychomotor function; psychomotor reaction time; psychophysiology; questionnaires; stimulus /response

DESCRIPTION (provided by applicant): The broad objective of this research is to understand how the nervous system learns to produce postural activity that is optimally tuned for a given goal-directed movement. The proposed studies focus on anticipatory postural activity, which is a measure of how well the nervous system predicts the postural dynamics that will ensue as a movement is performed. Specific Aim 1 investigates the time course and tuning of anticipatory postural adjustments that occur when adults who are standing learn to reach in a novel, viscous force field. We will investigate whether the newly learned postural organization is stored by determining whether after-effects occur in anticipatory postural activity. Specific Aim 2 investigates whether anticipatory postural activity that has been tuned for reaching in a novel force field in one posture transfers to performance of the reaching task in another posture. We will study transfer between sitting and standing postures. Last, Aim 3 will investigate how the adaptive capacity of anticipatory postural adjustments differs between children and adults. This study will contribute to understanding of how postural control is optimized for movement and to devising rehabilitation strategies for individuals with posture control disorders.

描述（由申请人提供）：这项研究的广泛目的是了解神经系统如何学会产生为给定目标指导运动最佳调整的姿势活动。拟议的研究集中于预期的姿势活动，这是对神经系统预测在运动时会随之而来的姿势动态的量度的衡量。特定的目标1调查了时间过程和调整，当时成年人学会在一个新颖的粘性力场中伸手时，会发生预期的姿势调整。我们将通过确定是否在预期的姿势活动中确定后效应来研究新知识的姿势组织是否存储。具体目标2调查了是否已经调整了为在一个姿势转移的新型力场中触及的预期姿势活动是否在另一种姿势中进行到达任务的执行。我们将研究坐姿和站立姿势之间的转移。最后，AIM 3将调查儿童和成人之间预期姿势调整的适应性能力如何。这项研究将有助于理解姿势控制如何优化运动，并为患有姿势控制障碍的人制定康复策略。