Table 1.

Additional measures of performance for the analysis of cursor control

Performance Measure	untuned units		tuned units
	E	H	E	H
Path Efficiency [%]	34 ± 13	36 ± 15	41 ± 12	35 ± 15* (a)
Parallel Direction Change	41.4 ± 48.1	29.1 ± 25.5	32.5 ± 30.1	37.2 ± 39.9
Orthogonal Direction Change	39.2 ± 48.5	28.71 ± 29.7	29.6 ± 31.5	31.9 ± 34.3
Movement Variability [%]	7.4 ± 4	6.2 ± 2	6.9 ± 4	6.4 ± 3
Movement Error [%]	9.5 ± 4	8.9 ± 4	8.6 ± 3	8.1 ± 4
Movement Offset [%]	5 ± 5	5 ± 3	4.4 ± 4	5.8 ± 5* (b)
Target Re-entry	1.14 ± 1.1	0.94 ± 1.0	0.72 ± 0.91	0.65 ± 0.47
	1.04 ± 1.05		0.68 ± 0.72* (b)

Note: Values are mean ± SD; E, easy diagonal; H, hard diagonal;

^*p < .05 via Student's t-test or Wilcoxon ranksum when data were nonparametric: (a)– ttest; (b) - ranksum.