Fig. 1

Effects of bisphenol A (BPA) on spontaneous motor activity. Spontaneous motor activity was measured over 5 days from day 9 until day 13 after implantation. The mean spontaneous motor activity during the 5-day experimental period is as the mean ± standard error of the mean (SEM) for seven rats. *p < 0.05, **p < 0.005 (compared with the values of the vehicle-treated group at the corresponding time by the Mann–Whitney U test). Open circle Vehicle-treated group, filled circle BPA-treated group