τ-Decay time constant for GABA-gated current (msec)
| Control | 6043.7 ± 1247.3 |
| Pseudopregnant, 1 d wd | 978.7 ± 114* |
| Pseudopregnant, 2 d wd | 3898.6 ± 498** |
| Pseudopregnant | 5897 ± 1003 |
The decay time for GABA current (τ) is reduced 84% (p < 0.005) 1 d after progesterone withdrawal. No difference in τ is noted for pseudopregnant rats not undergoing withdrawal. Time constants were estimated with a first order exponential decay function using Origin software (Microcal, Inc.). These results are representative of those observed in 15–16 cells per 6 rats per group.
*p < 0.005 versus control, pseudopregnant.
**p < 0.05 versus control, pseudopregnant.