Table 2 Main effect of difficulty level on reaction time, completion time, variability of reaction time, and correctness during rapid discrete movement

Level 1

0.254 ± 0.076

0.261 ± 0.079

Level 2

0.339 ± 0.131**

0.321 ± 0.092**

Level 3

0.405 ± 0.202**,^††

0.422 ± 0.133**

Completion time (s)

Level 1

0.377 ± 0.065

0.409 ± 0.097

Level 2

0.628 ± 0.133**

0.491 ± 0.117**

Level 3

0.708 ± 0.212**

0.704 ± 0.144**

CV of reaction time

Level 1

0.378 ± 0.161

0.358 ± 0.109

Level 2

0.294 ± 0.119*

0.308 ± 0.098

Level 3

0.274 ± 0.125**

0.352 ± 0.127

Correctness (%)

Level 1

96.7 ± 4.8

94.7 ± 5.6

Level 2

97.6 ± 3.8

97.0 ± 3.4

Level 3

91.8 ± 14.5*

81.7 ± 13.8**