Electromyography (EMG) is a promising candidate for the control of exo-skeletons. Not only because it can be a very intuitive way of controlling exoskeletons, but also because it may be faster than e.g. control executed via buttons. However, the bandwidth with which muscle activity can be measured using EMG is limited or requires many electrodes to be placed on the subject.
Multi-frequency Electrical Impedance Tomography (EIT) and high-frequency EIT both are techniques that scale much better than EMG.
This study focuses on the question of whether or not it is possible to measure muscle activity using EIT.