A Randomized Trial of Comparing the Efficacy of Two Neurofeedback Protocols for Treatment of Clinical and Cognitive Symptoms of ADHD: Theta Suppression/Beta Enhancement and Theta Suppression/Alpha Enhancement

Table 2

Descriptive statistics on cortical activity in two groups.

Scale	Group	Brain area	Pretest	Posttest	Follow-up
Delta	Alpha	Frontal	0.82 ± 0.57	0.26 ± 0.20	0.29 ± 0.25
		Central	0.64 ± 0.38	0.40 ± 0.27	0.45 ± 0.31
	Beta	Frontal	0.55 ± 0.30	0.33 ± 0.30	0.31 ± 0.26
		Central	0.80 ± 0.48	0.50 ± 0.35	0.45 ± 0.31
Theta	Alpha	Frontal	0.70 ± 0.49	0.48 ± 0.39	0.45 ± 0.44
		Central	0.86 ± 0.58	0.62 ± 0.45	0.65 ± 0.49
	Beta	Frontal	0.55 ± 0.45	0.36 ± 0.26	0.38 ± 0.38
		Central	0.52 ± 0.36	0.42 ± 0.29	0.46 ± 0.32
Alpha 1	Alpha	Frontal	0.58 ± 0.29	0.53 ± 0.38	0.53 ± 0.40
		Central	0.79 ± 0.54	0.61 ± 0.48	0.64 ± 0.40
	Beta	Frontal	0.52 ± 0.36	0.53 ± 0.45	0.57 ± 0.44
		Central	0.51 ± 0.41	0.45 ± 0.30	0.47 ± 0.494
Alpha 2	Alpha	Frontal	0.55 ± 0.38	1.12 ± 0.30	0.89 ± 0.44
		Central	0.72 ± 0.40	0.80 ± 0.41	0.77 ± 0.47
	Beta	Frontal	0.30 ± 0.35	0.46 ± 0.39	0.42 ± 0.37
		Central	0.60 ± 0.57	0.63 ± 0.51	0.67 ± 0.49
Beta 1	Alpha	Frontal	0.77 ± 0.55	0.88 ± 0.57	0.86 ± 0.49
		Central	0.82 ± 0.60	1.26 ± 0.46	0.878 ± 0.75
	Beta	Frontal	0.43 ± 0.31	0.73 ± 0.70	0.69 ± 0.64
		Central	0.58 ± 0.56	1.22 ± 0.67	0.84 ± 0.44