Changes in impedance at the electrode-skin interface of surface EMG electrodes during long-term EMG recordings
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AbstractChanges in the impedance at the electrode-skin interface of SEMG electrodes on the tibialis anterior were assessed in nine subjects. SEMG signals were recorded using a bipolar electrode configuration that conformed to the SENIAM recommendations for SEMG data collection. Impedance measurements were made between a pair of bipolar electrodes using a custom-built device consisting of a PC and an impedance conversion circuit. The impedance device enabled the simultaneous application and recording of a waveform constructed of a known combination of sinusoids passed between the two electrodes. SEMG recordings at 10% of each subject's maximal voluntary force during ankle dorsiflexion were made for a 30-s period every 15-min over a two hour period. Impedance was measured immediately before and after each SEMG recording. All subjects gave their written informed consent.
CitationHewson DJ, Duchene J, Hogrel JY (2001) 'Changes in impedance at the electrode-skin interface of surface EMG electrodes during long-term EMG recordings', 23rd Annual International Conference of the IEEE Engineering in Medicine and Biology Society - Istanbul, IEEE.
TypeConference papers, meetings and proceedings