A Novel Stress State Assessment Method for College Students Based on EEG

Table 4

Classification accuracy based on ELM under four features.

Feature	α	β	γ	δ	θ
Hurst index	0.7122	0.6945	0.7342	0.5898	0.6342
Fluctuation index	0.8098	0.8120	0.7788	0.7556	0.7861
Sample entropy	0.6541	0.5987	0.5062	0.6012	0.5142
Permutation entropy	0.7193	0.6298	0.5865	0.7181	0.5880