三头骨 Surae Ia 在静止姿势期间的姿势控制中的自感权重与视觉阻塞
1Kinesiology and Physical Education Program, Department of Health and Human Development, Western Washington University, Bellingham, DC 98225, USA.
Journal of functional morphology and kinesiology
|November 24, 2025
概括
闭上眼睛增加了对自身感知平衡的依赖. 这项研究发现,三体外肌肉的振动在视力被移除时会引起更大的身体摇摆,这表明对姿势控制的自感输入更大.
科学领域:
- 人类运动科学 人类运动科学
- 神经科学是一个神经科学.
- 生物力学 生物力学
背景情况:
- 姿势控制依赖于整合视觉,前体和体感官信息.
- 降低传感输入可靠性促使其余传感系统重新加权.
- 肌肉振动可以选择性地刺激肌肉线索Ia afferents,以评估自身感受贡献.
研究的目的:
- 为了量化视力阻塞对三肌形状 (TS) 的影响,在静止姿势时,Ia proprioceptive权重.
- 为了研究体位控制中的感官重权化策略.
主要方法:
- 41名健康的年轻人站在眼睛开着 (EO) 或闭着眼睛 (EC).
- 在静静姿势时,双边TS肌肉振动 (80 Hz) 被应用.
- 测量了前后地面压力中心 (COP) 位移以量化姿势反应.
主要成果:
- 与EO相比,在EC条件下,由TS振动引起的反向COP转移明显大于EC条件 (p < 10^-9).
- 这表明,当视觉输入不存在时,对TS自身感应的依赖性增加.
- 大多数参与者 (37/41) 显示,闭着眼睛的摇摆反应增加.
结论:
- 年轻的成年人表现出增加的三肌 surae Ia 自感权重用于姿势控制,当视力被屏蔽时.
- 这表明人们正在转向非视觉感官反来维持平衡.
- 这些发现支持了适应性感官重权的概念,以应对改变的感官环境.
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