Table 2.

Pearson’s product-moment correlation coefficients (r) between the PPD ratio at N20m, P35m, and P60m induced by each PPS paradigm (condition_b, _c, _d, _e, and _f) and each frequency (alpha, beta, and gamma) change in power between 300 and 500 ms after test stimulation under condition_a

	α	β	γ
Condition b (PPS)
N20m	0.07	0.12	− 0.33
P35m	0.23	0.10	0.20
P60m	0.38	0.50*	0.44
Condition c (10 Hz train)
N20m	0.23	0.09	0.31
P35m	0.10	0.11	0.11
P60m	0.28	0.54*	0.27
Condition d (20 Hz train)
N20m	−0.04	0.06	− 0.18
P35m	−0.15	− 0.09	− 0.01
P60m	0.23	0.55*	0.31
Condition e (50 Hz train)
N20m	− 0.17	− 0.25	− 0.26
P35m	0.05	0.16	0.13
P60m	0.33	0.55*	0.39
Condition f (100 Hz train)
N20m	0.13	0.09	− 0.12
P35m	− 0.23	− 0.01	− 0.03
P60m	0.23	0.59**	0.33
All
N20m	0.04	0.01	− 0.11
P35m	0.01	0.05	0.08
P60m	0.28**	0.53**	0.33**

*p < 0.05; **p < 0.01