TABLE 5.
Power spectral density in dementia and control groups.
| PSD (dB) (mean, std) | HC n = 18 | EOAD n = 30 | FTD n = 14 | MANOVA (2, 59) | PHC–EOAD | PEOAD–FTD | PHC–FTD |
| 1–4 Hz | 2.90 (8.1) | 1.91 (2.88) | 0.74 (3.32) | F = 0.716 p = 0.493 | |||
| 4–8 Hz | −0.07 (8.54) | −0.91 (2.72) | −2.90 (2.98) | F = 1.231 p = 0.299 | |||
| 8–12 Hz | 3.73 (8.65) | −3.21 (3.69) | −3.53 (3.81) | F = 10.085 p ≤ 0.001 | <0.001 | 1.000 | 0.002 |
| 12–30 Hz | −4.15 (8.38) | −11.19 (2.40) | −10.73 (2.54) | F = 12.445 p ≤ 0.001 | <0.001 | 1.000 | 0.001 |
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| rPSD (%, mean, std) | HC | EOAD | FTD | MANOVA (2,59) | PHC–EOAD | PEOAD–FTD | PHC–FTD |
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| 1–4 Hz | 0.98 (0.4) | 2.26 (0.54) | 1.70 (0.81) | F = 25.725 p ≤ 0.001 | <0.001 | 0.025 | 0.003 |
| 4–8 Hz | 1.01 (0.4) | 1.39 (0.37) | 1.24 (0.62) | F = 4.159 p = 0.020 | 0.016 | 0.861 | 0.469 |
| 8–12 Hz | 2.14 (0.72) | 0.95 (0.69) | 1.19 (0.94) | F = 14.167 p ≤ 0.001 | <0.001 | 1.000 | 0.003 |
| 12–30 Hz | 0.32 (0.10) | 0.15 (0.06) | 0.21 (0.09) | F = 28.330 P ≤ 0.001 | <0.001 | 0.087 | <0.001 |
HC, healthy controls; EOAD, early-onset Alzheimer disease; FTD, frontotemporal dementia.