Comparison of effects of morphine (0.1 μM) and clonidine (0.3 μM) in S cells from guinea pigs implanted with placebo or morphine pellets
| Pretreatment | Morphine | Clonidine | ||
|---|---|---|---|---|
| Hyperpolarization (mV) | Hyperpolarization (mV) | Δ Resistance (MΩ) | ||
| Placebo | 6.1 ± 0.7 | 7.3 ± 1.1 | −29.1 ± 7.9 | |
| Morphine | 7.5 ± 0.9 | 6.2 ± 0.9 | −16.3 ± 5.6 | |
Values are means of 8 cells from placebo preparations and 16 cells from morphine-pretreated guinea pigs.