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The myoelectric signals from the biceps brachii and triceps brachii were recorded during stepwise and linearly increasing flexion and extension. The power density spectrum of each signal was determined for different force levels and the median frequency was calculated to track the average conduction velocity, which in turn reflects motor unit recruitment or de-recruitment, and thereby the control...
This work deals with motor control of simple motor acts. In a horizontal circular movement of the forearm involving only triceps and biceps brachii, the authors measured the muscular activity by surface electromyography. They have studied the reaction which takes place in the first 100 ms following the torque perturbation, regarding it as a long latency response. The authors rectified and smoothed...
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