Table 3. Rank Sums of Predictive Probabilities (Pk) for Various ERP Components at Electrode Cz for Drugs with Significant Effects
Rank sums of event-related potential (ERP) components for predicting memory or logRT (a measure of sedation). In this analysis, the Pks for amplitude and latency were pooled and were analyzed together for all sedative drugs combined because fentanyl had no memory effect, it was excluded from the memory analysis). Amplitude components are indicated separately from latency components for clarity (except the combined parameter CN2P3, which contains both and is indicated in both amplitude and latency columns). Each component is followed by the group difference of all observations for all drugs combined in predictive probability and P value, versus the rank 1 component in each cell.
* Midazolam, propofol, thiopental only 12 ERP parameters × 3 drugs; worst rank is 36.