Identification of single motor units in skeletal muscle under low force isometric voluntary contractions using ultrafast ultrasound.
Identification of single motor units in skeletal muscle under low force isometric voluntary contractions using ultrafast ultrasound.
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DOI：
10.1038/s41598-020-79863-1
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发表时间：
2020-12-24
影响因子：
4.6
通讯作者：
Grönlund C
中科院分区：
文献类型：
--
作者：
Rohlén R;Stålberg E;Grönlund C
中枢神经系统（CNS）通过募集运动单位（MU）来控制骨骼肌。了解MU功能对于神经肌肉疾病、运动生理学和运动以及康复医学的诊断至关重要。记录和分析MU的电去极化是最先进方法的基础。超快超声是一种有潜力研究MU的方法，因为电去极化和随之而来的机械抽搐。在这项研究中，我们评估是否可以使用自主收缩的超快超声成像来识别单个MU及其机械抽搐。我们比较了分解的时空成分的超声图像序列对金标准针肌电图。我们发现，31%的MU可以被成功地定位和提取其发射模式。这种方法允许新的非侵入性的机会，研究机械性能的MU和中枢神经系统控制神经肌肉生理学。
The central nervous system (CNS) controls skeletal muscles by the recruitment of motor units (MUs). Understanding MU function is critical in the diagnosis of neuromuscular diseases, exercise physiology and sports, and rehabilitation medicine. Recording and analyzing the MUs’ electrical depolarization is the basis for state-of-the-art methods. Ultrafast ultrasound is a method that has the potential to study MUs because of the electrical depolarizations and consequent mechanical twitches. In this study, we evaluate if single MUs and their mechanical twitches can be identified using ultrafast ultrasound imaging of voluntary contractions. We compared decomposed spatio-temporal components of ultrasound image sequences against the gold standard needle electromyography. We found that 31% of the MUs could be successfully located and their firing pattern extracted. This method allows new non-invasive opportunities to study mechanical properties of MUs and the CNS control in neuromuscular physiology.
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影响因子：
3.4
作者：
BODINEFOWLER, S;GARFINKEL, A;EDGERTON, VR
通讯作者：
EDGERTON, VR
DOI：
10.1109/58.393110
发表时间：
1995-07-01
影响因子：
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作者：
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影响因子：
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作者：
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通讯作者：
Whittaker, Roger G.