Table 3.

Indices of the work curve before and after the Neurofeedback-EEG training in the experimental group (n = 7)

Indices	Rank sum	Rank sum	U	Z	p
	Before nfb	After nfb
Total number	277.00	389.00	106.00	− 1.76	0.079
First three minute	271.00	395.00	100.00	− 1.95	0.052
Period I	265.50	364.50	112.50	− 1.32	0.187
% increment	271.00	395.00	100.00	1.95	0.052*
II/I ratio	265.00	401.00	94.00	2.14	0.033*
Peak location	358.00	272.00	101.00	1.70	0.089
Convexity I	385.00	241.00	145.50	0.51	0.046*
Convexity II	372.50	234.50	122.50	1.23	0.055*
Oscillation I	351.00	256.50	144.00	0.55	0.058*
Mistake ratio	294.00	234.00	81.00	1.74	0.082
Correction ratio	263.50	402.50	92.50	− 2.18	0.029*
Initial decline	350.50	315.50	144.50	0.54	0.591
Duration of the decline	398.00	268.00	97.00	2.04	0.041*

The comparison based on the Wilcoxon signed-rank test

*Coefficient of significance p < 0.05