The quality of the EMG signals from the patient's residual limb was investigated with the use of high-density EMG, which has been used to interpret EMG signal quality in upper-limb amputees after ...

We don’t see many EMG (electromyography) projects, despite how cool the applications can be. This may be because of technical difficulties with seeing the tiny muscular electrical signals amo… ...

The EMG signal recorded represents a population of discharging motor units within the muscle. Elevated motor unit amplitudes recorded by an EMG represent reorganization of the motor unit ...

One is ground, the second is used to measure and signal from third is just subtracted from the second electrode to eliminate any unwanted interferring signals. You can even see it on the image ...