Analysis of a Low-Cost EEG Monitoring System and Dry Electrodes toward Clinical Use in the Neonatal ICU
Abstract
:1. Introduction
- Investigation and modelling of skin-electrode impedance of dry and wet electrodes on adults.
- Development of a neonatal EEG simulation test bench, using above impedance models.
- In-vivo assessment of dry versus wet electrodes on adults, and a comparison of in-vivo results versus the proposed simulation framework.
2. Materials and Methods
2.1. Skin-Electrode Interface
2.1.1. Skin-Electrode Impedance Modeling
2.1.2. EEG Electrodes
2.1.3. Impedance Testing
2.2. System Framework
2.2.1. Acquisition System
2.2.2. EEG Simulation Framework
2.2.3. In Vivo EEG
3. Results
4. Discussion
4.1. Skin-Electrode Impedance
4.2. EEG Simulation Framework
4.3. In-Vivo EEG
5. Conclusions
Author Contributions
Funding
Conflicts of Interest
References
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Sample Rate (Hz) | Resolution (bits) | (MO) | CMRR (dB) | Cross-Talk (dB) | |
---|---|---|---|---|---|
IFCN | 200 | 12 | 100 | 110 | 40 |
OpenBCI | 250 | 24 | 1000 | 120 | 110 |
Wet F | Wet O | g.tec F | g.tec O | Micro F | Micro O | |
---|---|---|---|---|---|---|
Impedance | 8.2 ± 1.5 | 19.9 ± 6.0 | 226.5 ± 62.4 | 77.9 ± 19.6 | 36.7 ± 5.7 | 214.9 ± 33.4 |
Resistance | 8.1 ± 1.4 | 17.6 ± 4.4 | 198.2 ± 48.2 | 70.7 ± 17.5 | 24.0 ± 2.3 | 135.8 ± 26.1 |
Correlation (±95% Conf. Int.) | SNR (±95% Conf. Int.) | 50 Hz Noise (µV) | |||
---|---|---|---|---|---|
Unfiltered | Filtered | Unfiltered | Filtered | ||
Generator | 0.998 ± 0.005 | 0.998 ± 0.004 | 24.93 ± 1.3 | 25.9 ± 1.3 | 0.32 ± 0.11 |
Resistor | 0.997 ± 0.015 | 0.997 ± 0.015 | 23.4 ± 1.6 | 23.4 ± 1.6 | 0.07 ± 0.03 |
Cloth | 0.997 ± 0.015 | 0.997 ± 0.015 | 22.7 ± 1.5 | 23.2 ± 1.6 | 0.24 ± 0.11 |
Wet Front. | 0.996 ± 0.016 | 0.997 ± 0.015 | 21.9 ± 1.5 | 23.2 ± 1.5 | 0.36 ± 0.15 |
Wet Occip. | 0.995 ± 0.019 | 0.997 ± 0.015 | 20.9 ± 1.6 | 23.0 ± 1.5 | 0.51 ± 0.21 |
g.tec Front. | 0.867 ± 0.555 | 0.982 ± 0.094 | 6.8 ± 1.5 | 15.9 ± 1.8 | 4.94 ± 2.11 |
g.tec Occip. | 0.978 ± 0.107 | 0.995 ± 0.019 | 15.1 ± 1.8 | 21.3 ± 1.6 | 1.54 ± 0.65 |
Micro Front. | 0.990 ± 0.041 | 0.996 ± 0.015 | 18.3 ± 1.7 | 22.5 ± 1.6 | 0.94 ± 0.40 |
Micro Occip. | 0.881 ± 0.511 | 0.985 ± 0.076 | 7.4 ± 1.5 | 16.5 ± 1.8 | 4.59 ± 1.98 |
g.tec Front. | g.tec Occip. | MicroTIP Front. | MicroTIP Occip | |
---|---|---|---|---|
Correlation | 0.827 ± 0.024 | 0.855 ± 0.009 | 0.915 ± 0.014 | 0.781 ± 0.008 |
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O’Sullivan, M.; Temko, A.; Bocchino, A.; O’Mahony, C.; Boylan, G.; Popovici, E. Analysis of a Low-Cost EEG Monitoring System and Dry Electrodes toward Clinical Use in the Neonatal ICU. Sensors 2019, 19, 2637. https://doi.org/10.3390/s19112637
O’Sullivan M, Temko A, Bocchino A, O’Mahony C, Boylan G, Popovici E. Analysis of a Low-Cost EEG Monitoring System and Dry Electrodes toward Clinical Use in the Neonatal ICU. Sensors. 2019; 19(11):2637. https://doi.org/10.3390/s19112637
Chicago/Turabian StyleO’Sullivan, Mark, Andriy Temko, Andrea Bocchino, Conor O’Mahony, Geraldine Boylan, and Emanuel Popovici. 2019. "Analysis of a Low-Cost EEG Monitoring System and Dry Electrodes toward Clinical Use in the Neonatal ICU" Sensors 19, no. 11: 2637. https://doi.org/10.3390/s19112637
APA StyleO’Sullivan, M., Temko, A., Bocchino, A., O’Mahony, C., Boylan, G., & Popovici, E. (2019). Analysis of a Low-Cost EEG Monitoring System and Dry Electrodes toward Clinical Use in the Neonatal ICU. Sensors, 19(11), 2637. https://doi.org/10.3390/s19112637