an increasing trendp < 0.05
marginally significantp = 0.063
After mental fatigue inducement, in the theta band, the interaction effect on average path length was significant ( F (3,56) = 3.239, p = 0.029, η p 2 = 0.148) and decreased significantly in the 15 Hz binaural beats group ( p < 0.05); the interaction effect on nodal efficiency was marginally significant ( F (3,56) = 2.568, p = 0.063, η p 2 = 0.121) and the 15 Hz binaural beats group showed an increasing trend ( p < 0.05).