Validation of a Low-Cost Electrocardiography (ECG) System for Psychophysiological Research
1
Chair Biological Psychology and Neuroergonomics, TU Berlin, 10623 Berlin, Germany
2
IT-Instituto de Telecomunicações, 1049-001 Lisbon, Portugal
*
Author to whom correspondence should be addressed.
Academic Editors: Guruprasad A. Giridharan, Ali H. Mahmoud, Ahmed Shalaby, Ayman El-baz and Mohammed Ghazal
Sensors 2021, 21(13), 4485; https://doi.org/10.3390/s21134485
Received: 6 April 2021
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Revised: 27 May 2021
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Accepted: 28 June 2021
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Published: 30 June 2021
(This article belongs to the Special Issue Computer Aided Diagnosis Sensors)
Background and Objective: The reliability of low-cost mobile systems for recording Electrocardiographic (ECG) data is mostly unknown, posing questions regarding the quality of the recorded data and the validity of the extracted physiological parameters. The present study compared the BITalino toolkit with an established medical-grade ECG system (BrainAmp-ExG). Methods: Participants underwent simultaneous ECG recordings with the two instruments while watching pleasant and unpleasant pictures of the “International Affective Picture System” (IAPS). Common ECG parameters were extracted and compared between the two systems. The Intraclass Correlation Coefficients (ICCs) and the Bland–Altman Limits of Agreement (LoA) method served as criteria for measurement agreement. Results: All but one parameter showed an excellent agreement (>80%) between both devices in the ICC analysis. No criteria for Bland–Altman LoA and bias were found in the literature regarding ECG parameters. Conclusion: The results of the ICC and Bland–Altman methods demonstrate that the BITalino system can be considered as an equivalent recording device for stationary ECG recordings in psychophysiological experiments.
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Keywords:
BITalino; BrainAmp; ICC; intraclass correlation coefficient; Bland–Altman method
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MDPI and ACS Style
Wagner, R.E.; Plácido da Silva, H.; Gramann, K. Validation of a Low-Cost Electrocardiography (ECG) System for Psychophysiological Research. Sensors 2021, 21, 4485. https://doi.org/10.3390/s21134485
AMA Style
Wagner RE, Plácido da Silva H, Gramann K. Validation of a Low-Cost Electrocardiography (ECG) System for Psychophysiological Research. Sensors. 2021; 21(13):4485. https://doi.org/10.3390/s21134485
Chicago/Turabian StyleWagner, Ruth E., Hugo Plácido da Silva, and Klaus Gramann. 2021. "Validation of a Low-Cost Electrocardiography (ECG) System for Psychophysiological Research" Sensors 21, no. 13: 4485. https://doi.org/10.3390/s21134485
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