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通过将前庭输入与身体扰动轴对齐来调节步进平衡反应

Brye A McMorran¹, John L Zettel¹

¹University of Guelph, Human Health and Nutritional Sciences, Guelph, Ontario, Canada.

|April 14, 2025

概括

使用电磁前庭刺激 (GVS) 的前庭反,直接调整补偿步骤恢复反应. 这表明前体系统通过根据感知运动调整步骤执行来调节平衡反应.

科学领域:

神经科学是一个神经科学.
生物力学生物力学
人类运动科学科学人类运动科学

背景情况:

余额恢复依赖于感知不稳定性,以启动纠正行动.
在调节这些恢复反应的幅度和时间方面,前庭反的确切作用,特别是步进,尚未完全理解.
以前的研究表明,前庭输入可以影响步骤前的预期姿势调整.

研究的目的:

为了确定前置输入是否调整步骤恢复响应或在步骤执行期间作为前置控制的参考.
研究如何改变前置运动的前置感知影响前进步骤恢复策略.

主要方法:

动前庭刺激 (GVS) 用于模拟前进 (FGVS) 或后退 (BGVS) 姿势运动在前进步骤恢复任务中.
分析的重点是姿势运动,步骤特征 (动力学) 和恢复稳定.
将FGVS,BGVS和可能的对照条件 (虽然没有明确说明) 之间的效果进行了比较.

主要成果:

动前庭刺激 (GVS) 产生了前进步骤反应的不对称调制.
后向GVS (BGVS) 导致更大的步骤前的姿势摆动,表明步骤前前进稳定性降低.
前进GVS (FGVS) 导致了更大,更快的前进步骤.
在步骤着陆时,BGVS产生了较小的稳定率,而FGVS提供了更大的稳定率.
恢复后,观察到稳定性的方向转移,BGVS导致向前转移,FGVS导致向后转移.

结论:

垂体输入直接调节补偿性步进反应,证明垂体基调的步进恢复的缩放.
前庭刺激的方向 (FGVS vs. BGVS) 影响步骤反应的大小和稳定性特征.
这些发现强调了前庭反在实时调整平衡恢复策略中的动态作用.

关键词:

平衡反应反应的平衡反应动前庭刺激动前庭刺激人类人类人类人类人类姿势姿势姿势

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