Supplementary Table 2. Results: Movement Parameters.

Mean values across participants and SEM (in parentheses) are given for synchronous and asynchronous touch conditions. Two-sided paired t-tests were performed to compare conditions; t-values and p-values are given.

Parameter	Unit	Synchronous Brushing Mean (SEM)	Asynchronous Brushing Mean (SEM)	t-value [1,13]	p-value
Endpoint error	mm	−19.00 (5.07)	−10.48 (4.19)	−4.92	.00028*
Initial movement direction	degree	72.47 (2.14)	69.79 (1.80)	2.37	.0342*
Curvature	ratio max pathoffset /distance	0.095 (0.009)	0.093 (0.008)	0.706	0.493
Mean velocity	m/sec	0.423 (0.016)	0.425 (0.016)	−0.419	0.682
Peak velocity	m/sec	1.03 (0.052)	1.06 (0.060)	−1.32	0.209
Time to peak	msec	190.86 (8.71)	183.67 (9.83)	1.76	0.101
Movement onset	msec	242.24 (7.82)	248.38 (7.68)	−1.18	0.260
Movement duration	msec	480.94 (40.26)	468.33 (37.11)	1.14	0.274