人类在一个动态平台上自组织平衡控制策略
Naser Taleshi1, Amid Kheirandish2, James M W Brownjohn3
1Department of Public Health and Sport Sciences, Faculty of Health and Life Sciences, University of Exeter, St Luke's Campus, Exeter, EX1 2LU, UK. n.taleshi@exeter.ac.uk.
Scientific reports
|July 8, 2025
概括
人类平衡策略在响应环境变化时自主自我组织. 这项研究模拟了姿势反应,揭示了随着扰乱频率的增加,联合策略的非线性过渡.
科学领域:
- 生物力学 生物力学
- 人类运动科学科学 人类运动科学
- 系统神经科学 系统神经科学
背景情况:
- 人的姿势控制涉及到对环境干扰的持续检测和适应性反应.
- 动态系统理论认为,这些反应是自我组织的,是从人与环境的相互作用中产生的.
研究的目的:
- 引入和验证一个模型预测控制器 (MPC) 框架,用于模拟人类对动态扰动的姿态反应.
- 研究姿势策略的自主出现及其非线性过渡.
主要方法:
- 开发了一个具有感官反的四段生物机械模型.
- 该MPC框架模拟了对不同频率的地下平台扰动的反应.
- 模型的发现与9名年轻参与者的实验数据进行了验证.
主要成果:
- 姿势策略自主出现,没有手动调节,来自动态与扰动的相互作用.
- 随着扰乱频率的增加,观察到从脚到膝盖战略的非线性过渡.
- 在年轻人中,发现关节运动在机械上效率较低.
结论:
- 人类对环境干扰的姿势反应是自我组织的,并以动态的方式出现.
- 拟议的MPC框架准确地捕捉了过渡动态,克服了传统模型的局限性.
- 了解这些新出现的策略为平衡控制的自我组织性提供了新的见解.
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