r2 values for best fit of normal probability distributions
| Lognormal | Cubed root | Untransformed | |
|---|---|---|---|
| Controls | 0.987 | 0.831 | 0.318 |
| 0.5 μm quinpirole | 0.998 | 0.951 | 0.680 |
| 40 μm sulpiride | 0.996 | 0.905 | 0.462 |
| Quinpirole/sulpiride | 0.997 | 0.949 | 0.688 |
| 50 μm l-DOPA | 0.994 | 0.880 | 0.416 |
| Quinpirole/l-DOPA | 0.997 | 0.925 | 0.553 |
Linear best fit regressions were calculated for normal probability distributions of raw values and cubed root and log transformations of the quantal sizes. The population distributions are shown in Figures 5 and 6. In each case, the data points were better fit by a lognormal transformation than a cubed root transformation.