| to strengthen the memories | 18 | purpose |
| such as a good night’s sleep | 14 | other |
| sometimes | 5 | temporal |
| brain → need → rest | 86 |
| brain → require → rest | 8 |
| brain → have → necessary rest | 3 |
| brain → need → adequate rest | 3 |
| brain → need → long periods of rest | 3 |
| negative | neutral | positive |
| 0.211 | 0.582 | 0.207 |
| Raw frequency | 103 |
| Normalized frequency | 0.567 |
| Modifier score | 0.400 |
| Perplexity | 257.547 |