| from nerve cells in the brain | 9 | location |
| in response to positive events | 8 | cause |
| from neurons | 5 | location |
| serotonin → be → released | 105 |
| serotonin → be released as → signal | 3 |
| serotonin → be → delivered | 3 |
| negative | neutral | positive |
| 0.140 | 0.537 | 0.323 |
| Raw frequency | 111 |
| Normalized frequency | 0.674 |
| Modifier score | 0.500 |
| Perplexity | 51.983 |