Fig. 6

Exposure to 100 kHz US reduces plasma corticosterone concentrations in OBX rats. Trunk blood was collected immediately after the hyperemotionality evaluation. CV = 0.32, 0.84, 0.29, and 0.55 from left to right. Group sizes were as follows: no-sound group (n = 8), 12-h group (n = 9), 24-h group (n = 8), and 48-h group (n = 6). All data are represented as mean ± standard error of the mean (SEM). *P < 0.05 by one-way ANOVA with post hoc Holm–Sidak multiple comparison tests.