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Table 2 EEG values for each group

From: Comparison of resting-state EEG between adults with Down syndrome and typically developing controls

EEG measure (n = 25 per group)

DS mean (SD)

TD control mean (SD)

Occipital

Frontal

 

Occipital

Frontal

Occipital

Frontal

Equation

Partial eta squared

Equation

Partial eta squared

Absolute delta power (0.5-4 Hz range; log μV2)

5.71 (0.52)

6.23 (0.59)

5.41 (0.36)

5.75 (0.39)

F (1, 47) = 1.91, p = .037*

.039 group

F (1, 47) = 11.14, p = .002**

.192 group

Relative delta power (0.5-4 Hz range; log μV2)

0.39 (0.02)

0.39 (0.02)

0.37 (0.02)

0.37 (0.02)

F (1, 47) = 8.18, p = .006**

.148 group

F (1, 47) = 8.34, p = .006**

.151 group

Absolute theta power (4-8 Hz range; log μV2)

5.29 (0.71)

5.69 (0.65)

4.89 (0.44)

5.15 (0.34)

1Group: F (1, 47) = 0.94, p = .338

Paradigm: F (1, 47) = 4.73, p = .035*

.020 group; .091 paradigm

F(1, 47) = 6.78, p = .012*

.126 group

Relative theta power (4-8 Hz range; log μV2)

0.25 (0.01)

0.26 (0.01)

0.24 (0.01)

0.24 (0.01)

1Group: F (1, 47) = 13.98, p = .001***

Paradigm: F (1, 47) = 6.77, p = .012*

.229 group; .126 paradigm

1Group: F (1, 47) = 9.25, p = .004**

Paradigm: F (1, 47) = 7.83, p = .007**

.164 group; .143 paradigm

Absolute alpha power (8-13 Hz range; log μV2)

5.19 (0.91)

5.43 (0.96)

5.76 (0.88)

5.82 (0.85)

F (1, 47) = 5.20, p = .027*

.100 group

F (1, 47) = 1.87, p = .179

.038 group

Relative alpha power (8-13 Hz range; log μV2)

0.15 (0.02)

0.15 (0.02)

0.19 (0.02)

0.16 (0.01)

F (1, 47) = 61.04, p ≤ .001***

.565 group

F (1, 47) = 12.45, p ≤ .001***

.209 group

Absolute beta power (13-30 Hz range; log μV2)

3.27 (0.52)

3.46 (0.54)

3.56 (0.45)

3.64 (0.46)

F (1, 47) = 4.03, p = .050*

.079 group

F (1, 47) = 0.33, p = .569

.007 group

Relative beta power (13-30 Hz range; log μV2)

0.19 (0.02)

0.19 (0.02)

0.20 (0.01)

0.20 (0.01)

F (1, 47) = 8.32, p = .006**

.150 group

F (1, 47) = 4.45, p = .040*

.087 group

Absolute alpha peak amplitude (8-13 Hz range; log μV2)

0.11 (0.06)

0.12 (0.06)

0.24 (0.08)

0.23 (0.09)

F (1, 47) = 27.88, p ≤ .001***

.372 group

F (1, 47) = 19.05, p ≤ .001***

.288 group

Relative alpha peak amplitude (8-13 Hz range; log μV2)

0.03 (0.00)

0.03 (0.00)

0.03 (0.00)

0.03 (0.00)

F (1, 47) = 9.72, p = .003**

.171 group

F (1, 47) = 8.98, p = .004**

.160 group

Alpha peak frequency (8-13 Hz range; Hz)

10.32 (1.07)

10.44 (1.11)

10.27 (0.14)

10.30 (0.21)

1Group: F (1, 47) = 1.52, p = .224

Paradigm: F (1, 47) = 7.38, p = .009**

.031 group; .136 paradigm

F (1, 47) = 0.191, p = .664

.004 group

  1. Mean (SD) values for all EEG variables investigated, shown for each region (occipital and frontal) and group (DS and TD control). Occipital and frontal region group comparison: Results of ANCOVAs between groups for each EEG variable for occipital region and frontal regions shown. 1Covariate significant so kept in model. Asterisk used to denote significance level (≤.05*, ≤.01**, ≤.001***). Effect sizes illustrated with partial eta squared value