Key variable (baseline)
|
Number | 40 |
Age | 71.70 (8.84) |
Education | 14.12 (2.72) |
Sex | 23 M / 17 F |
Handedness | 37 R / 3 L |
Estimated Verbal IQ | 102.32 (9.59) |
Dementia Rating Scale Total Score (/144) | 129.87 (8.84) |
Beck Depression Inventory Total Score (/63) | 5.95 (4.86) |
Beck Anxiety Inventory Total Score (/63) | 8.43 (5.76) |
Age at symptom onset | 39.73 (16.87) |
Disease duration (from diagnosis) | 18.14 (12.88) |
Fahn-Tolosa-Marin Tremor Rating Scale (/84, Items 1–10) | 19.35 (6.85) |
|
Neuropsychological (NP) assessment/surgery intervals (months)
|
Baseline NP to surgery | 1.05 (1.53) | | | |
Surgery to first post-NP | 3.26 (0.94) | Surgery to second post-NP | 11.97 (0.88) |
Baseline NP to first post-NP | 4.30 (1.74) | First post-NP to second post-NP | 8.71 (1.29) |
|
Stimulation parameters at 3 and 12 months
|
Side of surgery | 35 left, 5 right | | | |
|
3 months
| | |
12 months
|
Amplitude (V) | Left | 3.40 (0.60) | Amplitude (V) | Left | 3.18 (0.53) |
| Right | 3.24 (0.75) | | Right | 3.24 (0.75) |
Frequency (Hz) | Left | 147.14 (25.62) | Frequency (Hz) | Left | 150.57 (25.72) |
| Right | 153.00 (11.51) | | Right | 155.00 (13.69) |
Pulse width (μs) | Left | 89.14 (23.56) | Pulse width (μs) | Left | 100.29 (32.49) |
| Right | 84.00 (25.10) | | Right | 84.00 (25.10) |
|
Tremor scores at 3 and 12 months
|
|
3 months
| |
12 months
|
Off stimulation | 17.00 (6.07) | Off stimulation | 17.62 (7.12) |
On stimulation | 8.45 (4.25) | On stimulation | 8.45 (4.13) |