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Experiment 2 conditions (for each intertrial interval).
| Condition | Stressor | Drug |
|---|---|---|
| 1 | No stress | Saline |
| 2 | No stress | NE antagonist cocktail |
| 3 | No stress | 1 μM NE |
| 4 | No stress | 10 μM NE |
| 5 | No stress | 100 μM NE |
| 6 | No stress | 1000 μM NE |
| 7 | Bright light | Saline |
| 8 | Bright light | NE antagonist cocktail |
| 9 | Sound | Saline |
| 10 | Sound | NE antagonist cocktail |
