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首页> 外文期刊>Journal of Neuroscience Methods >A surface EMG multi-electrode technique for characterizing muscle activation patterns in mice during treadmill locomotion.
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A surface EMG multi-electrode technique for characterizing muscle activation patterns in mice during treadmill locomotion.

机译：一种表面肌电多电极技术，用于表征跑步机运动过程中小鼠的肌肉激活模式。

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摘要

In mice a new method for 2x4-channel surface electromyography (EMG) recordings of the vastus lateralis and biceps femoris muscles during locomotion on a treadmill with varying speed is presented. The approach involves high-speed-videography (sampling interval 2.5ms) in concert with the application of chronically implanted surface EMG multi-electrodes (EMG sampling rate 4000Hz, frequency range 10-700Hz). The recordings are started 2 days after surgery and finished 2 weeks after surgery. During the whole investigation period EMG recordings of both muscles have been possible. The monopolar EMG activities recorded by the electrode-arrays and the bipolar EMG signals derived from the monopolar activities permit an evaluation of the extent of myo-electrical activation in larger regions of both muscles and co-ordination between the flexor and extensor muscles. Bipolar EMG signals indicate propagation of activities along the muscle fibers and a slight effect of non-propagating signal components. Thus, the crosstalk between these muscles is small and does not influence the evaluation of the EMG results. The resolution of the simultaneously recorded synchronized data allows a precise temporal correlation of kinematic and EMG parameters.
机译：在小鼠中，提出了一种新方法，用于在跑步机上以不同速度运动时记录股外侧肌和股二头肌的2x4通道表面肌电图（EMG）。该方法涉及高速视频（采样间隔为2.5ms），并与长期植入的表面EMG多电极（EMG采样率4000Hz，频率范围10-700Hz）配合使用。手术后2天开始录音，手术后2周结束录音。在整个调查期间，可能会记录两块肌肉的EMG。由电极阵列记录的单极EMG活性和从单极活性导出的双极EMG信号可以评估肌肉的较大区域的肌电激活程度以及屈肌和伸肌之间的协调。双极EMG信号表示沿肌肉纤维的活动传播以及非传播信号分量的轻微影响。因此，这些肌肉之间的串扰很小，并且不会影响对EMG结果的评估。同时记录的同步数据的分辨率可以实现运动学参数和EMG参数的精确时间相关。

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