Figure 4

Effects of DPI on ethological measurements taken during the EPM test. a–d Frequency of unprotected head dips that occurred in the open arms; e–h frequency of protected head dips that occurred in the central area and closed arms; i–l grooming; m–p rearing. All values are expressed as mean ± SEM. n = 7–15 mice for each group shown in the figure. *P < 0.05, **P < 0.01, ***P < 0.001, N.S. non-significant difference, sham vs. DPI, unpaired Student’s t test.