A study of surface motor unit action potentials in first dorsal interosseus (FDI) muscle

We studied the basic shapes of surface MUAPs of the FDI muscle using a wavelet matching technique. By averaging surface EMGs triggered by the intramuscular EMG, we found the surface MUAPs matched very well with the selected wavelets. It provides us a potential way to quantify the surface EMG by estimating the number of the action potentials contained within it.

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