Clinical features of patients with PLS
| Subject | Age (years) | Disease Duration (years) | Finger-Tapping Speed* (taps/s; R/L) | Regions with UMN Signs |
|---|---|---|---|---|
| 1 | 52 | 4 | 2.5/2.2 | B, UE, LE |
| 2 | 56 | 5 | 3.0/1.7 | B, UE, LE |
| 3 | 55 | 6 | 2.1/2.1 | B, UE, LE |
| 4 | 43 | 7 | 3.0/2.3 | B, UE, LE |
| 5 | 47 | 8 | 4.1/3.5 | B, UE, LE |
| 6 | 49 | 8 | 2.9/2.5 | B, UE, LE |
| 7 | 68 | 17 | 2.6/2.7 | B, UE, LE |
Note:—R indicates right; L, left; B, bulbar; UE, upper extremities; LE, lower extremities; UMN, upper motor neuron.
* Control group tapping speed: R, 6.0 ± 0.6 taps/s; L, 5.5 ± 0.5 taps/s.