Table 1. Mean (SD) Respiratory 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- | |
| Ttot | -0.1 (0.6) |
0.1 (0.6) |
-0.1 (0.7) |
-0.0 (0.6) |
-0.2 (0.9) |
0.2 (0.5) |
-0.2 (0.9) |
-0.0 (0.8) |
-0.1 (1.0) |
-0.0 (0.6) |
| Ti | -0.0 (0.3) |
0.0 (0.3) |
0.1 (0.3) |
0.0 (0.2) |
0.1 (0.2) |
0.1 (0.3) |
0.1 (0.3) |
0.1 (0.4) |
0.1 (0.4) |
0.0 (0.6) |
| Te | 0.0 (0.5) |
0.1 (0.4) |
0.1 (0.4) |
0.1 (0.3) |
0.1 (0.4) |
0.1 (0.3) |
-0.1 (0.5) |
0.0 (0.6) |
0.1 (0.5) |
-0.1 (0.4) |
| Pexpin | 0.0 (0.7) |
0.1 (0.7) |
-0.2 (0.5) |
-0.1 (0.4) |
-0.2 (0.5) |
-0.1 (0.3) |
-0.2 (0.6) |
-0.0 (0.7) |
-0.1 (0.7) |
0.1 (0.8) |
| Ti/Ttot | .01 (.06) |
.00 (.05) |
.03 (.07) |
.00 (.05) |
.03 (.09) |
.02 (.05) |
.01 (.07) |
.01 (.06) |
.00 (.08) |
-.00 (.06) |
| Amp | -0.3 (0.7) |
-0.2 (0.7) |
-0.1 (0.4) |
-0.1 (0.5) |
-0.0 (0.6) |
0.0 (0.6) |
-0.2 (0.6) |
0.0 (0.8) |
-0.3 (0.9) |
-0.0 (1.4) |
| PetCO2 | 0.4 (0.9) |
0.1 (0.9) |
-0.1 (1.5) |
0.4 (0.8) |
-0.1 (1.3) |
0.3 (0.8) |
0.2 (1.4) |
-0.0 (1.2) |
0.2 (1.3) |
-0.0 (1.5) |
Note. Ttot = respiratory cylce time (s); Ti= inspiratory time (s); Te = expiratory time (s); Pexpin = post-expiratory pause duration (s); Amp = respiratory amplitude (standardized within subjects); Ti/Ttot = inspiratory duty time (%); PetCO2 = end-tidal carbon dioxide pressure (mmHg)