Table 2 Average performance of PPT tasks
|  | Active (n = 33) | Sham (n = 33) | ||||
|---|---|---|---|---|---|---|
Baseline | Online | Offline | Baseline | Online | Offline | |
Peg task | ||||||
 Number of completions | 28.98 (2.90) | 31.24 (3.17) | 32.53 (3.44) | 29.34 (2.72) | 30.31 (3.07) | 30.94 (3.73) |
 Z-scores | – | 0.79 (1.11) | 1.24 (1.21) | – | 0.36 (1.15) | 0.59 (1.39) |
Assembly task | ||||||
 Number of completions | 27.70 (2.38) | 30.57 (2.39) | 31.77 (2.66) | 28.23 (2.79) | 29.28 (3.03) | 29.86 (3.29) |
 Z-scores | – | 1.22 (1.02) | 1.74 (1.14) | – | 0.38 (1.10) | 0.59 (1.20) |