Table 3.
The mean dominant frequency (DF) ± DFV (mean SD of the DF), DFV ± SD and frequency prevalence (FP) ± SD for the theta (4–7.75 Hz), slow-theta (4–5.5 Hz), fast-theta (5.75–7 Hz), alpha (8–13.75 Hz) and theta-alpha (4–13.75 Hz) frequency ranges 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 | Variables | Controls | AD | DLB | PDD | |
|---|---|---|---|---|---|---|
| Theta | Frontal | DF ± SD | 6.93 ± 0.4 | 6.57 ± 0.54 | 6.49 ± 0.60 | 6.26 ± 0.31 |
| DFV ± SD | 0.93 ± 0.25 | 0.98 ± 0.24 | 0.73 ± 0.24 | 0.80 ± 0.19 | ||
| FP ± SD | 19.55 ± 22.14 | 44.92 ± 24.54 | 82.48 ± 21.00 | 91.36 ± 8.29 | ||
| Central | DF ± SD | 7.11 ± 0.33 | 6.67 ± 0.59 | 6.65 ± 0.52 | 6.51 ± 0.35 | |
| DFV ± SD | 0.81 ± 0.28 | 0.86 ± 0.29 | 0.63 ± 0.22 | 0.67 ± 0.16 | ||
| FP ± SD | 18.84 ± 24.96 | 41.02 ± 26.07 | 80.60 ± 21.02 | 90.49 ± 9.22 | ||
| Posterior | DF ± SD | 7.17 ± 0.35 | 6.71 ± 0.60 | 6.57 ± 0.66 | 6.31 ± 0.29 | |
| DFV ± SD | 0.78 ± 0.33 | 0.86 ± 0.31 | 0.60 ± 0.21 | 0.72 ± 0.18 | ||
| FP ± SD | 16.72 ± 23.49 | 34.99 ± 24.45 | 83.35 ± 23.68 | 94.99 ± 6.25 | ||
| Lateral | DF ± SD | 7.18 ± 0.31 | 6.80 ± 0.54 | 6.65 ± 0.53 | 6.51 ± 0.36 | |
| DFV ± SD | 0.80 ± 0.30 | 0.83 ± 0.33 | 0.64 ± 0.26 | 0.72 ± 0.18 | ||
| FP ± SD | 17.53 ± 22.06 | 39.24 ± 26.68 | 83.35 ± 18.76 | 89.36 ± 15.10 | ||
| Slow-theta | Frontal | DF ± SD | 4.88 ± 0.15 | 4.93 ± 0.17 | 5.01 ± 0.15 | 5.02 ± 0.14 |
| DFV ± SD | 0.55 ± 0.06 | 0.52 ± 0.07 | 0.49 ± 0.08 | 0.50 ± 0.08 | ||
| FP ± SD | 2.23 ± 4.28 | 10.52 ± 13.29 | 16.27 ± 21.06 | 18.77 ± 11.56 | ||
| Central | DF ± SD | 4.95 ± 0.17 | 4.98 ± 0.18 | 5.16 ± 0.14 | 5.14 ± 0.13 | |
| DFV ± SD | 0.52 ± 0.06 | 0.49 ± 0.06 | 0.42 ± 0.10 | 0.43 ± 0.10 | ||
| FP ± SD | 1.21 ± 3.05 | 9.46 ± 12.37 | 9.51 ± 14 | 11.14 ± 12.28 | ||
| Posterior | DF ± SD | 4.91 ± 0.14 | 4.94 ± 0.18 | 5.11 ± 0.13 | 5.11 ± 0.15 | |
| DFV ± SD | 0.54 ± 0.06 | 0.51 ± 0.06 | 0.45 ± 0.07 | 0.45 ± 0.10 | ||
| FP ± SD | 1.11 ± 3.34 | 6.97 ± 9.25 | 13.77 ± 23.03 | 16.15 ± 11.75 | ||
| Lateral | DF ± SD | 4.86 ± 0.18 | 4.94 ± 0.16 | 5.09 ± 0.15 | 5.09 ± 0.16 | |
| DFV ± SD | 0.56 ± 0.05 | 0.51 ± 0.08 | 0.44 ± 0.11 | 0.46 ± 0.09 | ||
| FP ± SD | 0.51 ± 1.15 | 5.44 ± 6.74 | 10.76 ± 17.41 | 11.76 ± 11.99 | ||
| Fast Theta | Frontal | DF ± SD | 7.20 ± 0.27 | 6.98 ± 0.32 | 6.74 ± 0.41 | 6.55 ± 0.22 |
| DFV ± SD | 0.59 ± 0.14 | 0.62 ± 0.11 | 0.53 ± 0.12 | 0.55 ± 0.09 | ||
| FP ± SD | 17.32 ± 21.02 | 34.4 ± 17.95 | 66.21 ± 20.86 | 72.59 ± 10.45 | ||
| Central | DF ± SD | 7.31 ± 0.22 | 7.02 ± 0.31 | 6.79 ± 0.43 | 6.69 ± 0.24 | |
| DFV ± SD | 0.53 ± 0.16 | 0.60 ± 0.14 | 0.50 ± 0.11 | 0.52 ± 0.07 | ||
| FP ± SD | 17.62 ± 24.30 | 31.56 ± 20.68 | 71.09 ± 20.34 | 79.35 ± 11.86 | ||
| Posterior | DF ± SD | 7.35 ± 0.21 | 7.06 ± 0.36 | 6.76 ± 0.47 | 6.54 ± 0.20 | |
| DFV ± SD | 0.52 ± 0.17 | 0.58 ± 0.16 | 0.48 ± 0.11 | 0.52 ± 0.09 | ||
| FP ± SD | 15.60 ± 22.51 | 28.01 ± 19.35 | 69.59 ± 27.37 | 78.85 ± 11.86 | ||
| Lateral | DF ± SD | 7.36 ± 0.19 | 7.09 ± 0.30 | 6.81 ± 0.41 | 6.70 ± 0.24 | |
| DFV ± SD | 0.50 ± 0.15 | 0.58 ± 0.18 | 0.49 ± 0.13 | 0.52 ± 0.08 | ||
| FP ± SD | 17.02 ± 21.95 | 33.81 ± 24.26 | 72.59 ± 21.64 | 77.60 ± 15.63 | ||
| Alpha | Frontal | DF ± SD | 9.13 ± 0.57 | 9.40 ± 0.88 | 8.64 ± 0.21 | 9.01 ± 0.44 |
| DFV ± SD | 0.88 ± 0.40 | 1.07 ± 0.43 | 0.85 ± 0.32 | 1.19 ± 0.27 | ||
| FP ± SD | 80.45 ± 22.14 | 55.08 ± 24.54 | 17.52 ± 21 | 8.64 ± 8.29 | ||
| Central | DF ± SD | 9.13 ± 0.65 | 9.42 ± 0.90 | 8.48 ± 0.17 | 8.70 ± 0.39 | |
| DFV ± SD | 0.82 ± 0.41 | 1.04 ± 0.40 | 0.60 ± 0.17 | 0.87 ± 0.37 | ||
| FP ± SD | 81.16 ± 24.96 | 58.98 ± 26.07 | 19.40 ± 21.02 | 9.51 ± 9.22 | ||
| Posterior | DF ± SD | 9.03 ± 0.63 | 1.06 ± 0.96 | 8.49 ± 0.18 | 8.72 ± 0.33 | |
| DFV ± SD | 0.64 ± 0.35 | 0.86 ± 0.45 | 0.62 ± 0.25 | 0.93 ± 0.37 | ||
| FP ± SD | 83.28 ± 23.49 | 65.01 ± 24.45 | 16.65 ± 23.68 | 5.01 ± 6.25 | ||
| Lateral | DF ± SD | 9.12 ± 0.71 | 0.92 ± 0.82 | 8.48 ± 0.18 | 8.61 ± 0.41 | |
| DFV ± SD | 0.82 ± 0.37 | 0.82 ± 0.40 | 0.65 ± 0.24 | 0.84 ± 0.35 | ||
| FP ± SD | 82.47 ± 22.06 | 60.76 ± 26.68 | 16.65 ± 18.76 | 10.64 ± 15.10 | ||
| Theta-alpha | Frontal | DF ± SD | 8.79 ± 0.75 | 8.24 ± 1.29 | 6.75 ± 0.80 | 6.45 ± 0.63 |
| DFV ± SD | 1.07 ± 0.46 | 1.29 ± 0.59 | 0.91 ± 0.27 | 0.98 ± 0.33 | ||
| Central | DF ± SD | 8.81 ± 0.82 | 8.36 ± 1.30 | 6.93 ± 0.71 | 6.68 ± 0.76 | |
| DFV ± SD | 0.92 ± 0.47 | 1.30 ± 0.60 | 0.80 ± 0.25 | 0.82 ± 0.25 | ||
| Posterior | DF ± SD | 8.82 ± 0.79 | 8.65 ± 1.21 | 6.78 ± 0.86 | 6.41 ± 0.58 | |
| DFV ± SD | 0.78 ± 0.38 | 1.21 ± 0.75 | 0.73 ± 0.23 | 0.84 ± 0.27 | ||
| Lateral | DF ± SD | 8.88 ± 0.81 | 8.42 ± 1.13 | 6.90 ± 0.71 | 6.74 ± 0.81 | |
| DFV ± SD | 0.93 ± 0.41 | 1.13 ± 0.51 | 0.79 ± 0.31 | 0.88 ± 0.35 | ||