| Performance of Picture Comparison | |||
| Placebo | Verum | ||
| 0 h | Mean | 64.79 | 65.63 |
| SD | 15.28 | 12.67 | |
| SEM | 4.41 | 3.48 | |
| 1.5 h | Mean | 73.96 | 78.13 |
| SD | 18.24 | 9.42 | |
| SEM | 5.21 | 2.72 | |
| Performance of Stroop-Test | |||
| Placebo | Verum | ||
| 0 h | Mean | 100.00 | 100.00 |
| SD | 0.00 | 0.00 | |
| SEM | 0.00 | 0.00 | |
| 1.5 h | Mean | 100.00 | 100.00 |
| SD | 0.00 | 0.00 | |
| SEM | 0.00 | 0.00 | |
| Performance of Memory-Test | |||
| Placebo | Verum | ||
| 0 h | Mean | 87.83 | 93.75 |
| SD | 12.76 | 1.54 | |
| SEM | 3.68 | 4.49 | |
| 1.5 h | Mean | 89.58 | 97.92 |
| SD | 16.71 | 7.22 | |
| SEM | 4.83 | 2.08 | |
| Performance of Calculation (CPT) | |||
| Placebo | Verum | ||
| 0 h | Mean | 52.08 | 27.08 |
| SD | 31.00 | 22.51 | |
| SEM | 8.95 | 6.50 | |
| 1.5 h | Mean | 62.83 | 37.50 |
| SD | 33.02 | 34.54 | |
| SEM | 9.53 | 9.97 | |
| Performance of Brain Teaser | |||
| Placebo | Verum | ||
| 0 h | Mean | 77.50 | 72.50 |
| SD | 9.65 | 16.58 | |
| SEM | 2.79 | 4.79 | |
| 1.5 h | Mean | 86.67 | 83.33 |
| SD | 10.73 | 13.03 | |
| SEM | 3.10 | 3.76 | |