改变触觉反对平衡的效应通过感官冲突估计来解释
Raymond F Reynolds1, Craig P Smith1, Lorenz Assländer2
1School of Sport, Exercise & Rehabilitation Sciences, University of Birmingham, Birmingham, UK.
The European journal of neuroscience
|January 15, 2025
概括
轻轻触摸表面有助于通过减少身体摇摆来平衡. 修改这种触觉反显著影响稳定性,最佳平衡发生在微妙,现实的感官输入中.
科学领域:
- 人类的感觉运动控制
- 生物力学 生物力学
- 神经科学是一个神经科学.
背景情况:
- 一个稳定的表面的轻微触摸有助于姿势控制.
- 触觉反在平衡中所起的作用还没有完全被理解.
研究的目的:
- 为了研究人工改变的触觉反对姿势摇摆的影响.
- 确定触觉反的最佳参数,以保持平衡.
主要方法:
- 参与者闭着眼睛站着,拿着一个设备,提供放大或减弱的触觉反.
- 触觉反收益在+2和-2之间有系统地变化.
- 测量了姿势摇摆和手操的相互作用力.
主要成果:
- 姿势摇摆显示了对触觉反增益的不对称U形反应,摇摆接近零的增益最小.
- 波动随着正反增益 (运动放大波动) 显著增加,随着负增益 (运动相反波动) 显著增加.
- 更高质量的触觉反与减少摇摆相关,如手力和干位置交叉相关性所示.
结论:
- 中枢神经系统可以利用增强的触觉反来保持平衡,但对反收益的变化很敏感.
- 微妙的,生理上现实的触觉反,模仿自我运动,是最有效的平衡.
- 增强的触觉反在健康个体中比静态物体提供了最小的好处,当收益明显偏离自然反时.
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