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与TBI相关的EMG描述神经肌肉对站立时先前乱的反应

Kiran K Karunakaran, Easter S Suviseshamuthu, Prasad Tendolkar

IEEE transactions on neural systems and rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society

|July 24, 2025

概括

创伤性脑损伤 (TBI) 患者表现出延迟的肌肉激活和改变的反应来平衡挑战. 与健康对照组 (HCs) 相比,TBI (pwTBI) 患者的这些神经肌肉差异可能解释了他们的跌倒风险增加.

科学领域:

神经科学是一个神经科学.
生物力学生物力学
康复科学康复科学康复科学

背景情况:

创伤性脑损伤 (TBI) 损害了感觉运动和神经肌肉功能,导致平衡缺陷和落风险增加.
这些障碍影响了对日常活动和生活质量至关重要的补偿性姿势调整.

研究的目的:

用电肌图 (EMG) 来量化TBI (pwTBI) 和健康对照 (HCs) 之间神经肌肉反应的差异.
为了研究肌肉激活开始的变化,EMG爆发区域,以及姿势扰乱期间的中位频率.

主要方法:

电肌图 (EMG) 数据从八个HC和九个pwtBI中收集.
参与者站在一个平台上,该平台在四种不同的振幅下产生前置扰动.
分析了EMG特征,包括肌肉激活开始,爆发面积和中位频率.

主要成果:

与HC相比,pwTBI显示肌肉激活的开始延迟.
在pwtTBI中,EMG爆发区域更大,表明肌肉反应大小增加.
在pwtTBI中,EMG信号的中位频率下降,这表明肌肉纤维招募或疲劳发生变化.

结论:

与HC相比,pwTBI对姿势干扰的神经肌肉反应显著发生变化.
这些发现表明,在TBI后,运动控制和肌肉功能存在潜在的变化.
了解这些神经肌肉缺陷对于制定有针对性的康复策略至关重要,以改善平衡并降低pwtBI中的跌倒风险.

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