Electrical parameters of stimulation at implant, 3 month, and 12 month follow up
| Parkinson’s disease | Essential tremor | ||||||
|---|---|---|---|---|---|---|---|
| Implant | 3 months | 12 months | Implant | 3 months | 12 months | ||
| Voltage (V) | 1.97 (0.87) [85] | 2.34 (0.93) [83]8-150 | 2.51 (0.93) [78]8-150 | 1.93 (0.79) [45] | 2.17 (0.81) [44]8-150 | 2.40 (0.77) [44]8-150 | |
| Pulse width) (s) | 89.65 (45.44) [86] | 88.92 (45.05) [83] | 81.92 (30.45) [78] | 92.00 (44.04) [45] | 92.73 (39.26) [44] | 83.86 (31.42) [44] | |
| Rate (Hz) | 147.50 (24.38) [86] | 156.45 (25.16) [83] | 162.95 (28.42) [78] | 151.56 (23.74) [45] | 156.36 (24.72) [44] | 163.64 (24.42) [44] | |
| Monopolar | [66] | [69] | [71] | [38] | [39] | [39] | |
| Bipolar | [23] | [15] | [7] | [8] | [5] | [5] | |
| Contacts:† | |||||||
| 0 - / + / off | 47 / 0 / 42 | 42 / 2 / 40 | 32 / 2 / 44 | 21 / 1 / 24 | 17 / 2 / 26 | 18 / 2 / 24 | |
| 1 - / + / off | 31 / 12 / 46 | 35 / 9 / 40 | 42 / 3 / 33 | 21 / 7 / 18 | 21 / 3 / 20 | 21 / 3 / 20 | |
| 2 - / + / off | 15 / 7 / 67 | 14 / 1 / 29 | 21 / 1 / 56 | 11 / 0 / 35 | 18 / 3 / 63 | 17 / 0 / 27 | |
| 3 - / + / off | 8 / 3 / 78 | 4 / 2 / 78 | 4 / 1 / 73 | 1 / 1 / 44 | 2 / 0 / 42 | 2 / 0 / 42 | |
Values are mean (SD) [No of electrodes]. †For each contact (0 to 3), No of patients who have a setting with a negative (-) polarity/a positive (+) polarity/contact off (off).
↵8-150 p<0.001 v implant.