Summary of the parameters for each of the five experiments
| Group (n) | Infusion time | Retention delay | Number of trials (drug) | |
|---|---|---|---|---|
| Experiment 1 | Pre-sample (8) | 3 min before sample | 20 min | 2 (sal) |
| 2 (lido) | ||||
| Post-sample (6) | Immediately after sample | 20 min | 2 (sal) | |
| 2 (lido) | ||||
| Pre-choice (7) | 3 min before choice | 20 min | 2 (sal) | |
| 2 (lido) | ||||
| Experiment 2a | Pre-sample (10) | 3 min before sample | 5 min | 2 (sal); 2 (lido) |
| 180 min | 2 (sal); 2 (lido) | |||
| Pre-choice (10) | 3 min before choice | 5 min | 2 (sal); 2 (lido) | |
| 180 min | 2 (sal); 2 (lido) | |||
| Experiment 2b | Pre-sample (11) | 3 min before sample | Minimum (∼30 sec) | 2 (sal); 2 (lido) |
| 5 min | 2 (sal); 2 (lido) | |||
| 180 min | 2 (sal); 2 (lido) | |||
| Experiment 3a | Immediate (8) | Immediately after sample | 60 min | 2 (sal); 2 (lido) |
| 20 min (9) | 20 min after sample | 60 min | 2 (sal); 2 (lido) | |
| 40 min (9) | 40 min after sample | 60 min | 2 (sal); 2 (lido) | |
| Experiment 3b | Immediate (7) | Immediately after sample | 120 min | 2 (sal); 2 (lido) |
| 20 min (7) | 20 min after sample | 120 min | 2 (sal); 2 (lido) | |
| 60 min (7) | 60 min after sample | 120 min | 2 (sal); 2 (lido) | |
| 80 min (7) | 80 min after sample | 120 min | 2 (sal); 2 (lido) |
sal, Saline; lido, lidocaine.