Table 4.

Change in resting EEG ratios from frontal (ie, average F3 and F4) electrodes during the eyes-closed condition after ≥30 days of Myndlift neurofeedback (n=41) for healthy users and separately for those that scored in the abnormal adult ADHD range (per conventional clinical cutoffs) at baseline.

EEGa pre-post outcome and group at baseline (cutoff value)			No. of sessions, mean (SD)		Treatment duration (days), mean (SD)		Change reduction (Hz), mean (SD)		Change T value		Change P valueb		Effect size, d
Delta/alpha ratio
	Abnormal (≥14; n=20)	49 (22.1)		77 (26.8)		0.20 (0.284)		3.15		.03		0.70
	Healthy (<14; n=21)	61 (36.9)		76 (27.8)		0.08 (0.450)		0.79		.59		0.18
Theta/alpha ratio
	Abnormal (≥14; n=20)	49 (22.1)		77 (26.8)		0.04 (0.171)		1.00		.66		0.22
	Healthy (<14; n=21)	61 (36.9)		76 (27.8)		0.01 (0.227)		0.35		.66		0.08
Theta/beta ratio
	Abnormal (≥14; n=20)	49 (22.1)		77 (26.8)		0.04 (0.144)		1.34		.79		0.30
	Healthy (<14; n=21)	61 (36.9)		76 (27.8)		0.02 (0.218)		0.44		.73		0.10

^aEEG: electroencephalography.

^bReported as Benjamini-Hochberg–adjusted P values.