Mental Task Evaluation for Hybrid NIRS-EEG Brain-Computer Interfaces

Figure 10

Importance of each EEG and NIRS feature subtype: EEG band powers (, , , 4–30 Hz, and total spectrum (0.1–100 Hz)) and chromophore types (HbO, HbR, and HbT). The histogram is based on the models trained on the one-second window occurring 11 to 12 seconds after stimulus onset, which corresponds to the average peak time for NIRS classification (see Table 4).