Correlation Between Electrode-Tissue Impedance and Motion Artifact in Biopotential Recordings

Buxi, Dilpreet; Kim, Sun‐Young; Helleputte, Nick Van; Altini, Marco; Wijsman, Jacqueline; Yazıcıoğlu, Refet Fırat; Penders, Julien; Hoof, Chris Van

doi:10.1109/jsen.2012.2221163

Cited by 61 publications

(39 citation statements)

References 21 publications

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“…A second suggestion was to use an injection signal for continuous impedance measurement [5], [16]. This technique is already used in conventional ECG measurement systems with gel or dry electrodes, e.g., in [17]. However, it has only recently been proposed for ECG measurement systems with capacitively coupled electrodes.…”

Section: Prior Workmentioning

confidence: 99%

Motion Artifacts in Capacitive ECG Measurements: Reducing the Combined Effect of DC Voltages and Capacitance Changes Using an Injection Signal

Serteyn

Vullings

Meftah

et al. 2015

IEEE Trans. Biomed. Eng.

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Link to publication Citation for published version (APA):Serteyn, A. A. M., Vullings, R., Meftah, M., & Bergmans, J. W. M. (2015). Motion artifacts in capacitive ECG measurements : reducing the combined effect of DC voltages and capacitance changes using an injection signal. IEEE Transactions on Biomedical Engineering, 62(1), 264-273. DOI: 10.1109/TBME.2014.2348178 General rightsCopyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.• Users may download and print one copy of any publication from the public portal for the purpose of private study or research.• You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal ? Take down policyIf you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim. Abstract-Capacitive electrodes are a promising alternative to the conventional adhesive electrodes for ECG measurements. They provide more comfort to the patient when integrated in everyday objects (e.g., beds or seats) for long-term monitoring. However, the application of capacitive sensors is limited by their high sensitivity to motion artifacts. For example, motion at the body-electrode interface causes variations of the coupling capacitance which, in the presence of a dc voltage across the coupling capacitor, create strong artifacts in the measurements. The origin, relevance, and reduction of this specific and important type of artifacts are studied here. An injection signal is exploited to track the variations of the coupling capacitance in real time. This information is then used by an identification scheme to estimate the artifacts and subtract them from the measurements. The method was evaluated in simulations, lab environments, and in a real-life recording on an adult's chest. For the type of artifact under study, a strong artifact reduction ranging from 40 dB for simulated data to 9 dB for a given reallife recording was achieved. The proposed method is automated, does not require any knowledge about the measurement system parameters, and provides an online estimate for the dc voltage across the coupling capacitor.

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Section: Prior Workmentioning

confidence: 99%

Motion Artifacts in Capacitive ECG Measurements: Reducing the Combined Effect of DC Voltages and Capacitance Changes Using an Injection Signal

Serteyn

Vullings

Meftah

et al. 2015

IEEE Trans. Biomed. Eng.

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“…The Current injection technique is discussed previously [24]. This approach implants DC current with chopped-phase to an AC bridge-based comparison circuit.…”

Section: Introduction and Current Techniquesmentioning

confidence: 99%

A High Input Impedance Low Noise Integrated Front-End Amplifier for Neural Monitoring

Zhou

Warr

2016

IEEE Trans. Biomed. Circuits Syst.

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“…As the frequency of MA is overlapped with AECG signal, the ordinary filter cannot remove MA without distorting AECG signal [1,2].…”

Section: Introductionmentioning

confidence: 99%

“…It uses a reference signal (RS) which is uncorrelated with the original signal (OS), but correlated with the noise signal. Several reports have indicated that electrodes tissue impedance (ETI) has strong correlation with MA [2,5]. The adaptive searching algorithm will adjust the filter parameter to obtain AF's output, which is the optimum estimation of the real noise.…”

Section: Introductionmentioning

confidence: 99%

Motion Artifact Suppression in Ambulatory ECG with Feed Forward Combine Adaptive Filter

Zhang

Jin

et al. 2016

2016 Computing in Cardiology Conference (CinC)

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Correlation Between Electrode-Tissue Impedance and Motion Artifact in Biopotential Recordings

Cited by 61 publications

References 21 publications

Motion Artifacts in Capacitive ECG Measurements: Reducing the Combined Effect of DC Voltages and Capacitance Changes Using an Injection Signal

Motion Artifacts in Capacitive ECG Measurements: Reducing the Combined Effect of DC Voltages and Capacitance Changes Using an Injection Signal

A High Input Impedance Low Noise Integrated Front-End Amplifier for Neural Monitoring

Motion Artifact Suppression in Ambulatory ECG with Feed Forward Combine Adaptive Filter

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