Table 4

Asymmetry in QEEG parameters


AUDS patients
n = 16
MDE patients
n = 16
p-valuea

Frontocentral region (μV)

delta
0.35 (0.18)
0.25 (0.23)
0.076

theta
0.25 (0.20)
0.33 (0.27)
0.52

alfa
0.41 (0.33)
0.50 (0.51)
0.79

Temporal region (μV)

delta
0.66 (0.53)
0.27 (0.28)
0.009

theta
0.53 (0.37)
0.40 (0.30)
0.12

alfa
1.18 (1.48)
0.85 (0.74)
0.85

Parietooccipital region (μV)

delta
0.60 (0.68)
0.26 (0.29)
0.05

theta
0.60 (0.81)
0.49 (0.61)
0.82

alfa
1.05 (0.95)
0.96 (1.20)
0.35

Absolute difference in μV (SD) between right and left side electrode regions.

Test 1, 2 and 3 values have been averaged.

aMann-Whitney U test,

AUDS: Acute Unstable Depressive Syndrome. MDE: Major Depressive Episode

Bjørk et al. BMC Psychiatry 2008 8:89   doi:10.1186/1471-244X-8-89