Table 4. Subject demographics and rejected trials and subjects in the analyses comparing PD patients on and off DBS.
Trials were rejected due to the criteria for button press and eye movements (Table 1) that were explained in Methods. Subjects were rejected if more than half of trials in either of their on or off sessions was rejected. In total we rejected 10 subjects; 3 were rejected in both sessions, while the other 7 were rejected in one session (6 in the off-session and 1 in the on-session). MDS-UPDRS score are the mean of 6 patients, because we could not obtain MDP-UPDRS in the on-DBS session.
| Subject Group | On-DBS | On-DBS | |
|---|---|---|---|
| Tested subjects | 17 | 17 | |
| Button Press | Rejected trials due to BP | 333 (26.9%) | 311 (28.8%) |
| Rejected subjects | 2 (11.8%) | 6 (35.3%) | |
| Remaining subjects after rejection due to BP | 15 | 11 | |
| Eye movement | Rejected trials due to eye movement | 347 (28.0%) | 268 (24.8%) |
| Rejected subjects | 1 (5.9%) | 1 (5.9%) | |
| Effect of both | Rejected trials in total | 434 (35.0%) | 386 (35.7%) |
| Rejected subjects | 0 | 0 | |
| Remaining subjects after rejection due to eye movement | 14 | 10 | |
| Imbalance | Rejected subjects | 1 (5.9%) | 2 (11.8%) |
| Total | Rejected subjects in total | 4 (23.5%) | 9 (52.9%) |
| Remaining subjects | 13 | 8 | |
| Final rejected subjects | 10 (58.8%) | ||
| Final subjects | 7 | ||
| Age (±SD) of final subjects | 66.5 (8.0 SD) | ||
| MDS-UPDRS (±SD) of final subjects | 12.8 (5.9 SD) | 30.2 (9.7 SD) | |