Table 3.
Absolute power (mV) of QEEG for each frequency
| Frequency | Brain region (frontal) | ADHD (n = 51) | Non-ADHD (n = 52) | F | p value |
|---|---|---|---|---|---|
| Delta | Lt. | 20.04 ± 8.19 | 20.50 ± 9.23 | 0.365 | 0.833 |
| Mid. | 6.88 ± 3.95 | 4.39 ± 4.54 | 2.704 | 0.035a | |
| Rt. | 20.83 ± 10.07 | 17.72 ± 9.36 | 0.807 | 0.524 | |
| Theta | Lt. | 12.47 ± 6.58 | 9.01 ± 6.36 | 2.213 | 0.073 |
| Mid. | 3.96 ± 2.87 | 3.99 ± 2.05 | 0.489 | 0.744 | |
| Rt. | 12.61 ± 5.93 | 10.10 ± 5.39 | 1.748 | 0.146 | |
| Alpha | Lt. | 8.00 ± 3.50 | 6.92 ± 3.46 | 1.100 | 0.361 |
| Mid. | 7.01 ± 4.46 | 5.40 ± 4.65 | 1.203 | 0.315 | |
| Rt. | 7.00 ± 2.92 | 5.95 ± 2.91 | 1.866 | 0.123 | |
| Beta | Lt. | 6.76 ± 4.03 | 4.78 ± 2.49 | 2.355 | 0.059 |
| Mid. | 3.33 ± 2.75 | 5.62 ± 4.82 | 3.022 | 0.021a | |
| Rt. | 7.98 ± 4.31 | 5.87 ± 3.59 | 1.931 | 0.111 | |
| High beta | Lt. | 15.38 ± 10.86 | 9.14 ± 6.66 | 3.029 | 0.021a |
| Mid. | 18.30 ± 14.82 | 10.58 ± 7.35 | 3.163 | 0.017a | |
| Rt. | 15.75 ± 11.10 | 10.05 ± 7.81 | 2.515 | 0.046a | |
| Gamma | Lt. | 19.59 ± 12.80 | 19.15 ± 15.47 | 0.726 | 0.576 |
| Mid. | 4.45 ± 6.71 | 7.61 ± 6.61 | 2.360 | 0.059 | |
| Rt. | 16.58 ± 11.84 | 11.51 ± 7.97 | 1.719 | 0.152 | |
| TBR | Lt. | 6.97 ± 4.18 | 8.10 ± 5.57 | 0.861 | 0.490 |
| Mid. | 6.35 ± 4.09 | 5.29 ± 2.25 | 1.044 | 0.389 | |
| Rt. | 8.63 ± 4.87 | 11.33 ± 7.61 | 2.107 | 0.086 |
Values are presented as mean ± standard deviation.
QEEG, quantitative electroencephalography; ADHD, attention deficit-hyperactivity disorder; Lt., left; Mid., middle; Rt., right; TBR, theta/beta ratio.
ap < 0.05.