Table 8

Electrical parameters of stimulation at implant, 3 month, and 12 month follow up

Parkinson’s diseaseEssential tremor
Implant3 months12 monthsImplant3 months12 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 - / + / off47 / 0 / 4242 / 2 / 4032 / 2 / 4421 / 1 / 2417 / 2 / 2618 / 2 / 24
1 - / + / off31 / 12 / 4635 / 9 / 4042 / 3 / 3321 / 7 / 1821 / 3 / 2021 / 3 / 20
2 - / + / off15 / 7 / 6714 / 1 / 2921 / 1 / 5611 / 0 / 3518 / 3 / 6317 / 0 / 27
3 - / + / off8 / 3 / 784 / 2 / 784 / 1 / 731 / 1 / 442 / 0 / 422 / 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.