On the use of a wearable electromyographic tool for neuromotor research

This article describes the use or a wearable tool to investigate sudden oscillators such those present in fatigue-induced tremor. The tool, called tremor coherence analyser (TCA), can sample up to four EMG channels. It calculates the coherence function between two selected channels in order to assess the coupling level between the signals. High coherence values can lead to identify a common oscillator that is causing the tremor observed in the measured signals. In order to validate the tool, experiments with eight healthy subjects with fatigue-induced tremor have been done. Results show the value of this portable tool to understand the underlying mechanisms of tremor.