Mouthing duration (sec) generated by cineole intraoral infusions as a function of prenatal treatment (water group, paired group, and long-delay group) and interval of the test (−2, −1, 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9 mins). Intraoral stimulation took place during interval 0. Vertical lines represent the standard errors of the means (adapted from Ref. 118). The asterisk denotes significant differences between the paired group and the remaining prenatal treatments.