Table 2.
The mean percentage of the total power distributed in each of three frequency bands: theta (4–7.75 Hz), alpha (8–13.5 Hz), beta (14–30.75 Hz), in each region: frontal, central, posterior, lateral, for each group: healthy controls (N = 21), Alzheimer’s disease (AD; N = 18), dementia with Lewy bodies (DLB; N = 17) and Parkinson’s disease dementia (PDD; N = 17) patients.
| Regions | Controls | AD | DLB | PDD | |
|---|---|---|---|---|---|
| Theta | Frontal | 20.19 ± 5.22 | 24.57 ± 6.26 | 37.63 ± 6.36 | 35.89 ± 7.46 |
| Central | 19.18 ± 4.96 | 23.02 ± 6.13 | 36.90 ± 7.05 | 35.33 ± 6.37 | |
| Posterior | 19.79 ± 5.77 | 23.51 ± 6.63 | 39.62 ± 7.53 | 39.10 ± 7.63 | |
| Lateral | 19.32 ± 5.29 | 24.39 ± 6.53 | 36.96 ± 6.07 | 35.35 ± 7.30 | |
| Alpha | Frontal | 35.12 ± 5.66 | 32.11 ± 4.31 | 28.96 ± 5.10 | 27.42 ± 2.57 |
| Central | 34.74 ± 5.11 | 32.61 ± 4.47 | 29.84 ± 4.91 | 29.04 ± 2.28 | |
| Posterior | 38.91 ± 6.04 | 35.49 ± 5.81 | 29.26 ± 5.75 | 23.91 ± 2.50 | |
| Lateral | 35.41 ± 5.10 | 33.43 ± 4.00 | 28.57 ± 4.98 | 26.75 ± 2.34 | |
| Beta | Frontal | 44.69 ± 7.09 | 43.32 ± 7.03 | 33.40 ± 3.74 | 36.69 ± 7.52 |
| Central | 46.07 ± 6.75 | 44.37 ± 6.71 | 33.26 ± 3.85 | 35.65 ± 6.20 | |
| Posterior | 41.30 ± 7.09 | 40.99 ± 8.38 | 31.11 ± 5.36 | 31.72 ± 7.67 | |
| Lateral | 45.27 ± 7.71 | 42.17 ± 6.59 | 34.47 ± 5.52 | 37.90 ± 7.80 | |