Table 5.
Listing and description of the stimulation parameters, impedance, and electrode settings for the entire PD group and the two subgroups with and without worsening of speech under StimON.
| Left STN |
Right STN |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Ampl. (V) | Pulse width (μs) | Freq. (Hz) | Imp. (Ω)* | Elec. comb. | Ampl. (V) | Pulse width (μs) | Freq. (Hz) | Imp. (Ω)* | Elec. comb. | |
| Median/SD/ 1.–3. quartile | Median/SD/ 1.–3. quartile | Median/SD/ 1.–3. quartile | Median/SD/ 1.–3. quartile | |||||||
| Entire PD group/n = 38 | 3.19/0.74 | n = 34: 60 | n = 2: 125 | 1048/94.79/71–2972 | n = 5: 0- | 3.25/0.67 | n = 35: 60 | n = 31: 130 | 958/90.77/60–2190 | n = 6: 0- |
| 2.8–3.7 | n = 4: 90 | n = 31: 130 | n = 15: 1- | 2.8–3.8 | n = 3: 90 | n = 2: 125 | n = 10: 1- | |||
| n = 1: 140 | n = 15: 2- | n = 1: 140 | n = 16: 2- | |||||||
| n = 3: 185 | n = 3: 3- | n = 3: 185 | n = 6: 3- | |||||||
| n = 1: 200 | n = 1: 200 | |||||||||
| Speech worsening under StimON/n = 8 | 3.53/0.70/3.0–3.7 | n = 6: 60 | n = 8: 130 | n = 2: 0- | 3.66/0.51/3.3–4.2 | n = 6: 60 | n = 8: 130 | n = 2: 0- | ||
| n = 2: 90 | n = 4: 1- | n = 2: 90 | n = 1: 1- | |||||||
| n = 2: 2- | n = 2: 2- | |||||||||
| n = 0: 3- | n = 3: 3- | |||||||||
| No speech worsening/n = 30 | 3.10/0.74/2.7–3.7 | n = 28: 60 | n = 2: 125 | n = 3: 0- | 3.14/0.67/2.6–3.7 | n = 29: 60 | n = 2: 125 | n = 4: 0- | ||
| n = 2: 90 | n = 13: 130 | n = 11: 1- | n = 1: 90 | n = 13: 130 | n = 9: 1- | |||||
| n = 1: 140 | n = 13: 2- | n = 1: 140 | n = 14: 2- | |||||||
| n = 3: 185 | n = 3: 3- | n = 3: 185 | n = 3: 3- | |||||||
| n = 1: 200 | n = 1: 200 | |||||||||
Ampl., amplitude; freq., frequency; imp., impedance (note that there are only measures for n = 30 patients, the missing data exclusively concern the group of “no speech worsening”)* elec. comb., electrode combination.
The amplitude of the right STN stimulation was significantly higher (p = 0.047) in the subgroup with speech worsening.