Fig. 1. Comparisons of EEGs in the F8 channel between genders. (A), (B), and (C) represent the power spectrum by time (10~118 s) and frequency intervals, the δ (0~4 Hz), θ-α-β (4~8 Hz, 8~13 Hz, 13~30 Hz) signals, and the γ signals (30~90 Hz) in the F8 channel, respectively, according to gender. At the bottom of each panel, the first black arrow represents the start of the neutral scene (NS, 19 s), and the second, third, and fourth red arrows represent the starts of scene 1, scene 2, and scene 3 (S1, 28 s; S2, 70 s; S3, 108 s), respectively. (D~H) represent the power ratio of the δ, θ, α, β, and γ signals in the F8 channel, respectively, in response to the NS and aggressive scenes across genders. All values are represented as the mean±SEM. The sample size for EEG measurement was 84 individuals, of which 36 were men, and 48 were women. *, **, and *** above the horizontal lines indicate statistically significant differences between men and women at p<0.05, 0.01, and 0.001, respectively, as determined by the two-tailed independent t-test. Therefore, *, **, and *** above the graph bar indicate statistically significant differences between the NS and aggression scenes (S1 or S2 or S3) at p<0.05, 0.01, and 0.001, respectively, as determined by the twoway ANOVA.
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