顺的追踪眼动有助于下肢长时间的反射调节
Oindrila Sinha1, Angus Peter Muttee1, Jia-Hao Wu1
1Department of Kinesiology, The Pennsylvania State University, University Park, PA - 16802, USA.
Journal of neurophysiology
|August 29, 2025
概括
在肢体乱期间,光滑追踪眼动 (SPEM) 影响腿部肌肉的长延迟反应 (LLR),但不是手臂肌肉. 视线调节特别影响姿势控制,突出复杂的感觉运动协调.
科学领域:
- 神经科学
- 人类运动控制
- 传感器运动集成
背景情况:
- 通过肌肉反应适应环境变化,体感反应,包括长延迟反应 (LLRs) 是至关重要的.
- LLR是快速的 (50-100毫秒) 校正肌肉反应,考虑肢体生物力学和任务目标.
- 顺追踪眼动 (SPEM) 用于追踪移动的物体,并可能影响运动反应.
研究的目的:
- 调查平滑追踪眼动 (SPEM) 在机械相互作用期间对上肢和下肢的长延迟反应 (LLR) 的影响.
- 在与移动物体相互作用时,确定视线方向是否会影响LLR.
主要方法:
- 参与者对虚拟物体进行上肢稳定任务,
- 在预期碰撞前的不同时间对手臂施加机械扰动 (200毫米或60毫米).
- 在上肢和下肢肌肉的LLR被记录并与凝视条件和扰动时间相关分析.
主要成果:
- 在上肢乱后,在腿部肌肉中观察到LLR,与之前的发现一致.
- 腿部LLR是通过目光调节的,在追逐过程中表现出比固定更大的反应,特别是对于晚期扰动 (撞击前60ms).
- 在站立或坐着的情况下,上肢LLR没有被视线显著调节.
结论:
- 视线调节在立场期间选择性地影响下肢LLR,特别是在撞击前的后期阶段,这表明对反控制的定时影响.
- 在这种情况下,上肢LLR似乎不受凝视调节的影响,可能是由于任务的性质或姿势要求.
- 这些发现突显了眼睛运动,手臂控制和全身姿势反应之间的复杂协调.
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