Figure 5.

Audible and ultrasonic communications at adulthood. A, Fraction of calls in the ultrasonic range (above 20 kHz). B, Average power of calls below 20 kHz. C, Average power of calls above 20 kHz. D, Power of calls. The F test was used for data analysis. Treatment, sex, and treatment by sex interaction were included in the model. Treatment effects were analyzed with dam nested under treatment and used as error term. There was significant (p = 0.05) treatment effect on average power of calls as indicated in D. Error bars represent SEM. Number of replicates tested = 13 female and 13 male mice for CTL group, 10 female and 10 male mice for OXY group. As with Figures 2 and 3, datapoints for all animals who engaged in these behaviors are shown. More animals called at this age than at PND21 to allow for inferences to be made, but some animals remained silent during the trial.