Electromyography
This chapter will cover the methods commonly used to asses muscle activity and function. This includes the techniques used to record electomyographic (EMG) singals, the best pracites for obtaining good-quality EMG singnals, and methods fot the analysis and interpretaion of the EMG recording.
5. Detecting the EMG signal
Thera are two main possibilites of detecting EMG signal: surface EMG, which involves placing the electrodes on the skin overlying the muscle; intramuscular EMG, which involves inserting an electrode into the muscle itself.
We will discuss only the surface EMG (sEMG). If you are more interested in intramuscular EMG Im gonna reffer you on The Comprehensive Textbook of Clinical Biomechanics by J. Richards (2018) or Muscles Alive, Their Functions Revealed by Electromyograph by Basmajian)