Figure 2.

summarizes the experiments measuring the chronic dose-response to MDMA (2.5, 5.0, and 10.0 mg/kg, i.p.) for the HA, TD, VA, and NOS locomotor indices. The values are presented as the mean ± S.E.M. Significance is determined by comparing activity counts to Day 2 (saline day). *p < 0.05.