Just searching for any good papers on the frequency content of EMG. Yes, I know it will be different if collected with a needle or on the skin. I am more interested in the second. I want to see how much it overlaps with the ECG...
Zipp, P. Effect of electrode parameters on the bandwidth of the surface e.m.g. power-density spectrum. Med. Biol. Eng. Comput. 16, 537–541 (1978). https://doi.org/10.1007/BF02457805
Although there are numerous articles on surface EMG signal processing, I attached two articles. I also recommend Prof Roberto Merletti's teaching materials, especially for easy understanding :