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Table 2 Standard EEG and quantitative EEG parameters

From: Serum anticholinergic activity and cerebral cholinergic dysfunction: An EEG study in frail elderly with and without delirium

 

Cognitively Unimpaired

n = 13

Dementia

N = 30 (24)

Delirium with Dementia

n = 13 (12)

Statistics

Background activity Hz

mean ± SD at rest

9.05 ± 0.67

7.67 ± 1.53

7.21 ± 1.12

F(2,54) = 7.60; p < 0.002;

CU >> D >> DD

aP-Peak frequency (Hz)

8.50 ± 0.84

7.27 ± 1.44

6.66 ± 1.13

F(2,46) = 7.30, p < 0.002;

CU >> D >> DD

A/TD-ratio

1.05 ± 1.10

0.60 ± 1.00

0.22 ± 1.18

F(2,46) = 7.84, p < 0.002;

CU > D >> DD;

rP-Delta μV2/Hz

1.21 ± 0.79

1.68 ± 0.79

2.51 ± 0.92

F(2,46) = 8.45, p < 0.001;

CU < D << DD;

rP-Theta1 μV2/Hz

0.62 ± 0.30

1.02 ± 0.44

1.14 ± 0.65

F(2,46) = 5.98, p < 0.005;

CU << D << DD

rP-Theta2 μV2/Hz

1.75 ± 9.6

1.77 ± 6.7

1.61 ± 0.55

F(2,46) = 0.20, p = 0.82

rP-Alpha1 μV2/Hz

2.08 ± 0.94

1.24 ± 0.76

0.86 ± 0.47

F(2,46) = 9.35, p < 0.0005;

CU >> D >> DD

rP-Alpha2 μV2/Hz

0.59 ± 0.29

0.49 ± 0.28

0.32 ± 0.15

F(2,46) = 4.72, p < 0.02;

CU >> DD; D > DD

  1. Absolute Power(aP) values are given for Peak frequency and alpha/theta+delta ratio, frequency bands are given in relative powerdensity values, mean ± Standard deviation, ANOVA statistics and Duncan posthoc-testing, with < or > giving the direction of the difference at a significance level of p < 0.01; >> or << specifying direction at a higher significance level of p < 0.001.