Table 1. Rate, amplitude, and velocity/amplitude ratios of SWJs in PSP patients, PD patients, and healthy control subjects.
| PSP | PD | Controls | Significance | |
|---|---|---|---|---|
| Fixation on | ||||
| Rate, SWJs per minute | 33.5±12.4 | 10.3±8.7 | 4.3±3.6 | † |
| Amplitude, deg | 1.3±0.5 | 1.4±1.1 | 1.3±1.1 | n.s. |
| Velocity/amplitude ratio, per s | 33.4±4.0 | 34.9±5.4 | 40.7±11.0 | n.s. |
| Fixation off | ||||
| Rate, SWJs per minute | 22.5±13.4 | 13.3±13.2 | 4.2±2.7 | * |
| Amplitude, deg | 2.0±0.7 | 1.6±0.6 | 1.5±0.7 | n.s. |
| Velocity/amplitude ratio, per s | 30.9±3.7 | 32.1±4.3 | 35.5±9.8 | n.s. |
Data are mean±SD values.
*p<0.01, †p<0.001.
n.s.: not significant, PD: Parkinson's disease, PSP: progressive supranuclear palsy, SWJs: square-wave jerks.