Mean ± S.E.M. escape failures in the learned helplessness paradigm in guinea pigs (n = 11–12)
| Group | Mean No. Escape Failures |
|---|---|
| A, no shock + vehicle | 5.5 ± 5.8 |
| B, shock + vehicle | 21.3 ± 8.8 |
| C, imipramine | 12.9 ± 7.3 |
| D, AR-A000002, 0.3 mg/kg | 21.5 ± 8.9 |
| E, AR-A000002, 1 mg/kg | 23.9 ± 7.8 |
| F, AR-A000002, 5 mg/kg | 37.6 ± 9.0 |
Data are means ± S.E.M., n = 11 to 12 for each mean.