Comparison of average UPDRS motor scores with unilateral deep brain stimulation of STN or GPi
| Surgical site | UPDRS optimal | UPDRS off | UPDRS optimal/off | UPDRS dorsal | UPDRS optimal/dorsal | UPDRS ventral | UPDRS optimal/ventral |
|---|---|---|---|---|---|---|---|
| GPi, globus pallidus interna; Off, DBS device in the off condition with no contacts being stimulated; Optimal, contact with greatest motor benefit; STN, subthalamic nucleus; UPDRS, unified Parkinson’s disease rating scale III motor score; %, per cent change in UPDRS score when optimal setting was compared with off, dorsal, and ventral contacts. | |||||||
| STN | 36.6 | 48.4 | 25.20% | 43.2 | (−) 15.2% | 44.8 | (-) 19.4% |
| GPi | 32.8 | 43.5 | 24.10% | 36.3 | (−) 8.8% | 36 | (-)17.5% |