Fig. 4.

Effect of LTCSIS in social behaviour and social novelty preference measured in the three-chamber social interaction test: (A) RI for session 1 (social affiliation and sociability, expressed as the quotient of the time the subject degus spent with Partner, I divided by the sum of the time spent with Partner I and the empty cup). (B) RI for Session 2 (social memory and novelty, expressed as the quotient of the time the subject degus spent with Partner II divided by the sum of the time spent with Partners I and II). The data were analysed statistically using two-way ANOVA followed by Fisher's LSD post-hoc test. The statistical effect of stress treatment, sex and the interaction between the two factors are indicated in the top of the figure. Each symbol corresponds to data from a single-sex stress treatment group, represented as the mean ± SEM (n = 13). As is showed in Figures for two-way ANOVA crossing lines indicate the interaction between both factors: stress treatment and sex.