Adverse events
| Adverse event | Transient | Permanent |
| Surgery related | ||
| Lead/wound infection | 1 | 0 |
| Headaches | 2 | 0 |
| cerebral contusion | 1* | 0 |
| Dysarthria | 0 | 1* |
| Delirium | 1 | 0 |
| Nocturnal enuresis | 2 | 0 |
| Hardware related | 0 | 1 |
| Stimulation related | ||
| Hypomania | 3 | 0 |
| Mania | 1 | |
| Dyskinesia | 4 | 0 |
| Anxiety | 3 | 0 |
| Controlateral motor contraction | 1 | 0 |
| Ipsilateral monocular deviation | 1 | 0 |
| Hemiballism | 1 | 0 |
| Impulsivity | 5 | 0 |
| Irritability | 4 | 0 |
| Suicidal ideation | 2† | 0 |
| Suicide attempt (voluntary drug intoxication) | 1 | |
| Behavioural disinhibition | 4 | 0 |
| Insomnia restless legs syndrome | 2 | |
| Not related to DBS | ||
| Diabetes type 2 | 0 | 1‡ |
| Osteomuscular pain | 2 | 0 |
| TOTAL | 41 | 3 |
*Left thalamic contusion responsible for mild dysarthria.
†Occurred at 6 months and 9 months postoperatively.
‡Discovered at a 9-month follow-up.
DBS, deep brain stimulation.