| to perform surgeries | 12 | purpose |
| into the brain | 8 | transitive-object |
| during the procedure | 6 | temporal |
| surgeon → use → robot | 37 |
| surgeon → use → the robot | 35 |
| surgeon → operate → the robot | 16 |
| surgeon → use → surgical robot | 9 |
| surgeon → be assisted by → robot | 5 |
| surgeon → used → robot | 4 |
| surgeon → operate → robot | 4 |
| surgeon → insert → the robot | 4 |
| negative | neutral | positive |
| 0.148 | 0.665 | 0.187 |
| Raw frequency | 114 |
| Normalized frequency | 0.560 |
| Modifier score | 0.650 |
| Perplexity | 345.444 |