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在持续暴露于视觉-体感冲突的情况下,平衡控制策略的适应性变化
An-Ke Hua1,2, Jing-Yuan Bai1, Guo-Zheng Wang1,3
1Department of Sports Science, Zhejiang University, Hangzhou, China.
Journal of neurophysiology
|January 27, 2025
概括
人类的姿势控制不同地适应感官信息. 下肢肌肉协调的变化取决于视觉和体感官输入在持续平衡挑战期间是否一致或不一致.
科学领域:
- 神经科学是一个神经科学.
- 生物力学 生物力学
- 人类运动控制人体运动控制
背景情况:
- 人类的姿势控制适应平衡挑战的干扰.
- 在感官冲突环境中适应持续干扰的机制尚未完全理解.
- 在改变的感官反过程中研究神经肌肉控制策略对于理解平衡至关重要.
研究的目的:
- 调查在姿势适应过程中下肢肌肉中振荡合的作用.
- 在多感官一致和不一致的环境下检查平衡控制的变化.
- 了解肢体间和肢体内肌肉协调如何适应持续的感官干扰.
主要方法:
- 参与者经历了状平台扰动 (0.24 Hz,前后轴).
- 视觉场景与体感官输入一致或不一致地呈现.
- 来自下肢的动力学数据和表面电肌图 (EMG) 分析了肌肉间连贯性.
主要成果:
- 肢体间连贯性在一致条件下较高,随着时间的推移而下降,而在不一致条件下仍然很低.
- 在3分钟的扰动过程中,双边四肢内部连贯性在一致和不一致的条件下都下降了.
- 持续的干扰降低了全身摇摆和刺激之间的合强度,表明灵活性增加.
结论:
- 姿势控制系统根据特定的环境适应一致和不一致的感官环境.
- 不一致的感官信息会破坏四肢间的肌肉间合,影响平衡控制.
- 持续的干扰会导致双边肌肉间合的减少,从而增强沙吉塔平面的适应性.
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