Force generation and EMG signal
A motoneuron pool in the spinal cord associated with a given muscle receives a multitude of neural commands from different parts of the central and peripheral nervous systems. The time course of the firing patterns of the motoneurons will define the dynamic behavior of the innervated muscle. A simulation was carried out to evaluate force generation, the corresponding motoneuron spike trains and the EMG signal. In this experiment, the synaptic input to the soleus MN nucleus were 100 corticospinal Poisson spike trains at 500 spikes/s each and a synaptic noise at 1000 spikes/s was used. This simulation used a step size of 0.02 ms. Figures below shows muscle force and EMG signal generated.