Table 2.

Paired sample t-test of the last vs. first neurofeedback session in 18 subjects.

EEG measures Last-minus-first	Units	Paired differences				t	df	P-value
		Mean	Std. Dev.	95% CI
				Lower	Upper
Gamma	%	0.22	1.24	−0.84	0.39	0.76	17	0.456
Theta/low beta	N/A	−1.72	3.40	0.032	3.42	−2.15	17	0.046
Theta/high beta	N/A	−1.48	2.83	0.081	2.89	−2.23	17	0.039
Theta/beta	N/A	−1.26	2.47	0.033	2.49	−2.16	17	0.045
“Focused Attention” index	C.U.	2.29	2.25	−3.41	−1.17	4.32	17	0.001
“40 Hz-centered Gamma” index	C.U.	3.68	6.66	−7.00	−0.37	2.34	17	0.031