| to communication between different brain regions | 5 | transitive-object |
| to short-term memory | 2 | purpose |
| structure → be → key | 4 |
| structure → be → the key | 3 |
| negative | neutral | positive |
| 0.061 | 0.701 | 0.239 |
| Raw frequency | 7 |
| Normalized frequency | 0.349 |
| Modifier score | 0.500 |
| Perplexity | 152.710 |