Table 1. Overall classification performance and fusion improvement.
| Region | EEG | fNIRS | EEG-fNIRS | + + REEG | + + RfNIRS | + + EEG | + + fNIRS | |
|---|---|---|---|---|---|---|---|---|
| Six-Bilateral | Accuracy % | 89.8 | 85.6 | |||||
| Sensitivity % | 87.5 | 82.3 | ||||||
| Specificity % | 92.0 | 88.0 | ||||||
| AUC % | 95.7 | 92.7 | ||||||
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| VLPFC | Accuracy % | 85.8 | 82.9 | 97.7 | 11.9*** | 14.8*** | 7.9*** | 12.1*** |
| Sensitivity % | 87.0 | 79.5 | 96.6 | 9.6*** | 17.1*** | 9.1*** | 14.3*** | |
| Specificity % | 84.5 | 86.2 | 98.7 | 14.2*** | 12.5*** | 6.7*** | 10.7*** | |
| AUC % | 90.3 | 89.7 | 99.5 | 9.2*** | 9.8*** | 3.8** | 6.8*** | |
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| ||||||||
| DLPFC | Accuracy % | 83.7 | 80.8 | 92.5 | 9.0*** | 11.7*** | 2.7* | 6.9*** |
| Sensitivity % | 86.6 | 83.3 | 92.9 | 6.3*** | 9.6*** | 5.4** | 10.6*** | |
| Specificity % | 80.8 | 78.3 | 92.0 | 11.1*** | 13.7*** | 0 | 4.0** | |
| AUC % | 90.0 | 86.3 | 97.6 | 7.6*** | 11.3*** | 1.9 | 4.9** | |
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| FPA | Accuracy % | 83.1 | 79.3 | 92.5 | 9.4*** | 13.2*** | 2.7* | 6.9*** |
| Sensitivity % | 86.0 | 82.9 | 92.0 | 6.0*** | 9.1*** | 4.5** | 9.7*** | |
| Specificity % | 80.1 | 75.8 | 92.9 | 12.8*** | 17.1*** | 0.9 | 4.9** | |
| AUC % | 92.5 | 86.3 | 97.0 | 4.5*** | 10.7*** | 1.3 | 4.3** | |
+ + REEG represents the improvement of fusing EEG and fNIRS in each subregion over EEG modality in that subregion; + + RfNIRS represents the improvement of fusing EEG and fNIRS in each subregion over fNIRS modality in that subregion; + + EEG represents the improvement of fusing EEG and fNIRS in each subregion over optimum EEG modality; + + fNIRS represents the improvement of fusing EEG and fNIRS in each subregion over optimum fNIRS modality, respectively. The marks ‘*’, ‘**’ and ‘***’ indicate that, the improvement of fusion was significant with p<0.05, p<0.01 and p<0.001, respectively.