Multilayer Network Approach in EEG Motor Imagery with an Adaptive Threshold
Abstract
:1. Introduction
2. Materials and Methods
2.1. Database
2.2. Preprocessing
2.3. Connectivity Estimation
3. EEG Processing
3.1. Layers Construction
3.2. Threshold Estimation
Otsu’s Threshold
3.3. Single-Layer Network Estimation
3.4. Multilayer Network Estimation
4. Results and Discussion
4.1. Single-Layer Network
4.2. Multilayer Network
4.2.1. Clustering
4.2.2. Key Electrodes
5. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Metric | Band | Electrode | Movement | Movement | Threshold | |
---|---|---|---|---|---|---|
1 | 2 | Fixed | Otsu | |||
Degree | Beta | C3 | Foot | Right Hand | * | * |
POz | Right Hand | Tongue | * | * | ||
CP2 | Left Hand | Right Hand | * | − | ||
CP3 | Right Hand | Tongue | * | − | ||
FC4 | Right Hand | Tongue | * | − | ||
Eigenvector | Beta | C3 | Foot | Right Hand | * | * |
POz | Right Hand | Tongue | * | * | ||
CP2 | Left Hand | Right Hand | * | − | ||
CP4 | Foot | Left Hand | * | − |
Fixed | Otsu | |
---|---|---|
Degree | ||
PageRank | ||
Eigenvector | ||
Kcore |
Fixed | Otsu | |
---|---|---|
Degree | ||
PageRank | ||
Eigenvector | ||
Kcore | Error | Error |
Electrode | Movement | Movement | Metric | Threshold | |||
---|---|---|---|---|---|---|---|
1 | 2 | Degree | Eigenvector | PageRank | Fixed | Otsu | |
CP2 | Left Hand | Tongue | − | * | − | * | − |
P2 | Foot | Left Hand | − | * | − | − | * |
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Covantes-Osuna, C.; López, J.B.; Paredes, O.; Vélez-Pérez, H.; Romo-Vázquez, R. Multilayer Network Approach in EEG Motor Imagery with an Adaptive Threshold. Sensors 2021, 21, 8305. https://doi.org/10.3390/s21248305
Covantes-Osuna C, López JB, Paredes O, Vélez-Pérez H, Romo-Vázquez R. Multilayer Network Approach in EEG Motor Imagery with an Adaptive Threshold. Sensors. 2021; 21(24):8305. https://doi.org/10.3390/s21248305
Chicago/Turabian StyleCovantes-Osuna, César, Jhonatan B. López, Omar Paredes, Hugo Vélez-Pérez, and Rebeca Romo-Vázquez. 2021. "Multilayer Network Approach in EEG Motor Imagery with an Adaptive Threshold" Sensors 21, no. 24: 8305. https://doi.org/10.3390/s21248305