Table 2.

Pearson’s correlation coefficients (r) and P-values (P) between pre-PAS TEP and ERSP metrics and modulation of TEP and ERSP and group differences in correlation coefficients.

Pre-PAS		HC group	TRD group	Group difference
metrics		(n = 29, df = 27)	(n = 56, df = 54)
TEP	Pre–Post0	r = −0.702	r = −0.570	z-score = 0.934
30–40 ms		P <0.001	P <0.001	P = 0.350
	Pre–Post15	r = −0.585	r = −0.679	z-score = 0.657
		P <0.001	P < 0.001	P = 0.511
	Pre–Post30	r = −0.566	r = −0.576	z-score = 0.062
		P < 0.001	P < 0.001	P = 0.951
TEP	Pre–Post0	r = −0.730	r = −0.631	z-score = 0.775
40–80 ms		P < 0.001	P < 0.001	P = 0.438
	Pre–Post15	r = −0.411	r = −0.727	z-score = 2.028
		P = 0.027	P < 0.001	P = 0.043
	Pre–Post30	r = −0.499	r = −0.687	z-score = 1.229
		P = 0.006	P < 0.001	P = 0.219
ERSP in	Pre–Post0	r = −0.465	r = −0.621	z-score = 0.931
gamma power		P = 0.011	P < 0.001	P = 0.352
	Pre–Post15	r = −0.446	r = −0.574	z-score = 0.726
		P = 0.015	P < 0.001	P = 0.468
	Pre–Post30	r = −0.799	r = −0.962	z-score = 3.660
		P < 0.001	P < 0.001	P < 0.001
ERSP in	Pre–Post0	r = −0.572	r = −0.419	z-score = 0.852
alpha power		P = 0.001	P = 0.001	P = 0.394
	Pre–Post15	r = −0.715	r = −0.426	z-score = 1.847
		P < 0.001	P = 0.001	P = 0.065
	Pre–Post30	r = −0.527	r = −0.759	z-score = 1.704
		P = 0.003	P < 0.001	P = 0.089

ERSP, event-related spectral perturbation; HC. healthy control; PAS, paired associative stimulation; TEP, TME-evoked potential; TMS, transcranial magnetic stimulation; TRD, treatment-resistant depression.