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Summary of experimental design
| Day | Trials | |
|---|---|---|
| 1 | Pre-exposure (training context) | 5 × tone, 5 × clicker (no shocks to either) |
| 2 | Training I (trials 1–5) | 5 × CS− → no shock, 5 × CS+ → shock |
| 3 | Training II (trials 6–10) | 5 × CS− → no shock, 5 × CS+ → shock |
| 4 | Extinction I (novel context) | 5 × CS−, 5 × CS+ (no shocks to either) |
