| serotonin → cause → vomiting | 5 |
| serotonin → initiate → the vomiting reflex | 5 |
| serotonin → promote → vomiting | 3 |
| serotonin → stimulate → vomiting | 3 |
| negative | neutral | positive |
| 0.540 | 0.415 | 0.045 |
| Raw frequency | 16 |
| Normalized frequency | 0.312 |
| Modifier score | 0.500 |
| Perplexity | 173.305 |