在慢性中风中,对自身感受指导的肢体和眼睛运动的损伤
Duncan T Tulimieri1,2, Amelia Decarie1,2, Tarkeshwar Singh3
1Biomechanics and Movement Science, University of Delaware, Newark, DE, USA.
Neurorehabilitation and neural repair
|October 15, 2024
概括
患上上肢亲感缺陷的中风幸存者表现出眼睛运动受损. 这些缺陷与四肢自感错误相关,影响感官整合和视觉引导的手臂运动.
科学领域:
- 神经科学是一个神经科学.
- 康复医学 康复医学 康复医学
- 人类运动控制人体运动控制
背景情况:
- 上肢亲感对于日常功能至关重要,并且在中风后经常受到损害.
- 脑卒中幸存者努力整合视觉反以提高自身感知能力.
- 上肢自觉缺陷对指导手臂行动的眼睛运动的影响仍然不清楚.
研究的目的:
- 为了研究上肢亲感障碍和中风后个体的眼动控制之间的关系.
- 了解如何感官整合跨模式受到了中风后的感知损失的影响.
主要方法:
- 一个KINARM外骨架与集成的眼睛跟踪被用于动力学评估.
- 参与者 (20次中风,20次对照) 执行了上肢和眼睛运动的自感匹配任务.
- 测量包括手端点误差和眼端点误差,比较被动机器人运动与主动匹配.
主要成果:
- 与对照组相比,中风患者的手端点误差 (2.1倍) 和眼端点误差 (1.5倍) 显著增加.
- 在中风幸存者中,手和眼睛亲感错误之间发现了强烈的正相关性 (r=0.67,P=0.001).
- 在对照组中没有观察到四肢和眼睛自身感知精度之间的这种相关性.
结论:
- 脑卒中幸存者的眼动精度降低与受影响较严重的肢体内自身感知障碍的程度有关.
- 损伤的自身感受阻碍了眼睛运动的协调,这表明交叉模式感官集成的破坏.
- 这些发现强调了使用视觉反来控制运动的挑战,并对中风康复策略产生影响.
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