Figure 8

Sex-dependent EEG activities during social interaction. (A,B) Plots of mean ± SEM of power spectral density in last minute before (blue), first minute after (orange) and third minute after (yellow) the introduction of a female (A, n = 6) or male (B, n = 5) intruder to the home cage of the male subject mouse. (C,D) Plots of EEG power in delta to gamma bands, normalized to the power during the last minute before the introduction of the female (C) or male (D) intruder. To compare the EEG power in each band during the three time periods, one way repeated measures ANOVA was used, followed by multiple pairwise comparison if P < 0.05. For male–female interaction, delta band: P = 0.044; theta band: P = 0.829; alpha band: P < 0.001; beta band: P < 0.001; gamma band: P < 0.001; low gamma band: P < 0.001; high gamma band: P < 0.001. For male-male interaction, delta band: P = 0.383; theta band: P = 0.829; alpha band: P = 0.046; beta band: P = 0.014; gamma band: P = 0.002; low gamma band: P < 0.001; high gamma band: P = 0.119. *P < 0.05, **P < 0.01, ***P < 0.001 for post-hoc pairwise comparison.