Table 1.

Brain and skin signals’ coherence values at the period ∼25 s.

Target	Experimental conditions	Mean	SEM
Brain	Sound walking	0.323	6.100 × 10-3
	No-sound walking	0.290	5.959 × 10-3
	Sound stepping	0.310	6.470 × 10-3
	No-sound stepping	0.319	6.401 × 10-3
Skin	Sound walking	0.300	5.805 × 10-3
	No-sound walking	0.295	6.376 × 10-3
	Sound stepping	0.288	6.079 × 10-3
	No-sound stepping	0.295	6.589 × 10-3

Brain: brain signals obtained by regressing out the skin blood flow signals; Skin: skin blood flow signals; SEM: standard error of the mean.