Table 3.

Pooled power spectral analysis per frequency band with upper and lower confidence intervals for the pre- and post-stimulation periods and for the calm vs. active states.

Frequency band	Mean value (μV2/Hz)	Lower 95% CI values	Upper 95% CI values	p -Value pre vs. post stimulation	p -Value calm vs. active
Delta pre-stimulation	3.32	2.63	4.2	0.16
Delta post-stimulation	2.86	2.28	3.60
Delta calm	2.5	2.01	3.10		<0.01*
Delta active	3.8	2.96	4.88
Theta pre-stimulation	1.17	0.63	1.2	0.01*
Theta post-stimulation	0.87	0.85	1.62
Theta calm	0.89	0.64	1.2		0.01*
Theta active	1.16	0.83	1.62
Alpha pre-stimulation	0.66	0.44	0.99	<0.01*
Alpha post-stimulation	0.46	0.31	0.68
Alpha calm	0.55	0.37	0.81		0.91
Alpha active	0.55	0.37	0.84
Beta pre-stimulation	0.83	0.61	1.13	0.03*
Beta post-stimulation	0.64	0.47	0.88
Beta calm	0.63	0.47	0.85		0.01*
Beta active	0.85	0.61	1.17
F50 pre-stimulation	4.69	2.84	7.72	0.21
F50 post-stimulation	3.28	2.01	5.35
F50 calm	4.75	3.01	7.49		0.18
F50 active	3.23	1.89	5.54
F95 pre-stimulation	11.55	9.55	13.55	0.20
F95 post-stimulation	9.97	8.04	11.9
F95 calm	10.64	8.92	12.35		0.84
F95 active	10.88	8.67	13.1

CI, confidence interval.

An * denotes statistical significance.