| to function | 22 | purpose |
| to do its work | 10 | purpose |
| to survive | 9 | purpose |
| brain → need → oxygen | 108 |
| brain → require → oxygen | 38 |
| brain → use → oxygen | 23 |
| brain → rely on → oxygen | 11 |
| brain → run on → oxygen | 9 |
| brain → depend on → oxygen | 7 |
| brain → consume → oxygen | 7 |
| brain → thrive on → oxygen | 4 |
| brain → be dependent on → oxygen | 4 |
| brain → utilize → the oxygen | 3 |
| negative | neutral | positive |
| 0.290 | 0.550 | 0.160 |
| Raw frequency | 214 |
| Normalized frequency | 0.684 |
| Modifier score | 0.500 |
| Perplexity | 125.281 |