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新的洞察力,肌肉活动与幻象手的运动相关的 transhumeral 截肢者的新见解

Manon Chateaux¹, Olivier Rossel¹, Fabien Vérité¹

¹ISM, Aix Marseille University, CNRS, Marseille, France.

Frontiers in human neuroscience

|September 16, 2024

概括

截肢者的幻手动 (PHM) 显示残余手臂的特定肌肉活动,类似于完整的手动. 这表明外围的重组,影响康复和假肢控制.

科学领域:

神经科学是一个神经科学.
生物医学工程生物医学工程
康复科学康复科学康复科学

背景情况:

在幻肢手动 (PHM) 过程中,在残余手臂的肌肉活动被观察到 transhumeral 截肢者.
这些与PHM相关的肌肉活动模式的神经生理学起源仍然不太清楚.
缺乏对这些模式的直接描述.

研究的目的:

通过表征剩余手臂肌肉活动来研究PHM的神经生理基础.
为了将PHM肌肉活动模式与完整手部运动 (IHM) 的肌肉活动模式进行比较.
探索截肢者潜在的外围重组机制.

主要方法:

开发了独立于电极放置的元变量,用于EMG信号分析.
量化了表面EMG信号的相形状和模式特异性.
截肢者在PHM期间的肌肉活动模式与对照人群中的IHM进行了比较.

主要成果:

在PHM期间剩余的手臂肌肉活动表现出与运动同步的相形状,类似于IHM期间的前臂/手肌.
PHM肌肉活动模式是特定于运动类型和电极位置的,即使是在同一个肌肉内.
完整的手臂显示同质的肌肉活动,与残余四肢的特定模式形成鲜明对比.

结论:

结果表明残余四肢的外周重组,可能涉及轴突发芽和肌肉纤维回收.
这种重组可能导致独立控制的肌肉子体积.
进一步的研究对于理解这些机制及其对康复和肌电假肢控制的影响至关重要.

关键词:

截肢是一种截肢.神经重组的神经重组幻影运动是一种幻影运动.康复康复康复康复康复康复剩余的肌肉活动.

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Somatosensation

Somatosensation

The somatosensory system relays sensory information from the skin, mucous membranes, limbs, and joints. Somatosensation is more familiarly known as the sense of touch. A typical somatosensory pathway includes three types of long neurons: primary, secondary, and tertiary. Primary neurons have cell bodies located near the spinal cord in groups of neurons called dorsal root ganglia. The sensory neurons of ganglia innervate designated areas of skin called dermatomes.