Table 2. Mean (SD) Heart Rate Responses during each Block of Acquisition and Extinction.
| Acquisition | Extinction | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Block 1 | Block 2 | Block 3 | Block 1 | Block 2 | ||||||
| CS+ | CS- | CS+ | CS- | CS+ | CS- | CS+ | CS- | CS+ | CS- | |
| D1 | -4.6 (6.0) |
-3.4 (3.2) |
-3.8 (5.5) |
-2.0 (3.5) |
-3.6 (5.0) |
-3.2 (4.2) |
-2.7 (4.5) |
-4.7 (6.0) |
-3.3 (4.6) |
-3.6 (4.9) |
| A | 1.1 (7.0) |
2.5 (7.0) |
3.5 (7.7) |
4.3 (5.9) |
5.6 (6.0) |
3.1 (5.6) |
4.8 (5.9) |
1.4 (7.9) |
2.9 (7.7) |
2.9 (5.3) |
| D2 | -5.9 (5.7) |
-5.5 (6.0) |
-4.0 (7.3) |
-3.9 (5.2) |
-4.0 (7.4) |
-5.9 (6.0) |
-6.5 (6.5) |
-8.8 (7.6) |
-7.4 (7.6) |
-6.5 (8.0) |
Note. D1 = initial cardiac deceleration (bpm); A = midinterval cardiac acceleration (bpm); D2 = late cardiac deceleration (bpm)