| to help perform vital tasks | 9 | purpose |
| for learning | 3 | purpose |
| like other organs in the body | 3 | other |
| brain → need → vitamin | 20 |
| brain → require → vitamin | 13 |
| brain → use → vitamin | 7 |
| brain → require → certain vitamins | 3 |
| negative | neutral | positive |
| 0.076 | 0.664 | 0.260 |
| Raw frequency | 43 |
| Normalized frequency | 0.427 |
| Modifier score | 0.500 |
| Perplexity | 341.282 |