Table 1. The dependency of submovement period on feedback delay.

Shown in the table are the gradients and intercepts of regression lines fitted to each harmonic group in Figure 1E. The time period of each spectral peak was regressed against feedback delay. Shown in square brackets are 95% confidence intervals of these values. Also shown is the estimated intrinsic time delay calculated using Equation (1).

Harmonic (N)	Predicted slope = 2/N	Measured slope	Measured intercept (ms)	R2	P	τint = Intercept*N/2
1	2	1.89 [1.69,2.09]	589 ms [539,638]	0.90	<0.00001	294 ms [270,319]
3	0.67	0.59 [0.53,0.65]	226 ms [211,242]	0.94	<0.00001	340 ms [316,362]
5	0.4	0.33 [0.22,0.45]	146 ms [106,185]	0.75	<0.00001	364 ms [266,463]