在不确定的环境中的人类运动策略:以协同作用为基础的稳定性-灵活性权衡的方法
Anvesh Naik1, Ruchika Iqbal1, Sébastien Hélie2
1Department of Health and Kinesiology, Purdue University, West Lafayette, IN, USA.
Human movement science
|August 7, 2024
概括
人类为敏捷运动做准备可能会降低稳定性,但任务不确定性可能会导致稳定性增加,阻碍性能. 本研究探讨了不确定性下的稳定性-敏捷性权衡及其对电机控制的影响.
科学领域:
- 神经科学和运动控制
- 人类运动科学科学 人类运动科学
- 生物力学 生物力学
背景情况:
- 人类经常减少稳定性,以增强运动过渡的敏捷性,但这增加了对中断的脆弱性.
- 个人可以根据需要执行敏捷行动的感知可能性调整稳定性,平衡风险和敏捷性.
- 运动协同效应理论量化了稳定性和预期协同调整 (ASA),但不确定性对ASA的影响是未知的.
研究的目的:
- 通过使用运动协同作用理论,研究人类如何在任务不确定性下管理稳定性-灵活性权衡.
- 确定不确定性对预期协同效应调整 (ASA) 的影响,特别是在去/不去任务中.
- 澄清ASA对快速行动的执行和抑制的影响.
主要方法:
- 结合的多指同度力生产与一个去/不去的范式.
- 参与者在对视觉线索的反应中执行了恒定力 (no-go),快速力脉冲 (go) 和随机的go/no-go试验.
- 测量了预救指力以计算ASA,使用不受控制的分流方法,并分析了后救援力特征.
主要成果:
- 与预期相反,ASA仅在去任务中观察到,而不是在去/不去任务中观察到.
- 在去/不去任务中,大多数参与者 (53%) 在提示符之前增加了稳定性,这影响了表现.
- 在go/no-go任务中增加的稳定性导致no-go试验中的更多错误,并在go试验中减少峰值力,支持稳定性-灵活性权衡.
结论:
- 任务的不确定性,特别是在需要运动抑制的场景中,可以矛盾地导致稳定性增加,阻碍敏捷的表现.
- 任务不确定性和运动抑制如何影响ASA的个体差异需要在运动协同作用理论中进行进一步的研究.
- 该研究提出了一种新的方法来探索稳定性,敏捷性,不确定性和运动控制之间的复杂相互作用.
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