Table 1

Descriptive data of the EEG alpha peak
Derivation Eyes closed Eyes open
Week 1 Week 2 Week 3 Week 1 Week 2 Week 3
Frequency [Hz]
C3LM 9.2 (±1.2) 9.2 (±1.1) 9.2 (±1.2) 9.3 (±1.3) 9.1 (±1.1) 9.4 (±1.3)
C4LM 9.2 (±1.1) 9.2 (±1.2) 9.2 (±1.2) 9.4 (±1.2) 9.1 (±1.2) 9.3 (±1.1)
O1LM 9.7 (±0.7) 9.6 (±0.8) 9.5 (±0.7) 9.7 (±0.7) 9.5 (±0.7) 9.4 (±0.8)
O2LM 9.6 (±0.8) 9.5 (±0.8) 9.5 (±0.7) 9.5 (±0.8) 9.5 (±0.8) 9.4 (±0.7)
Height [μV2/Hz]
C3LM 35.20 (±35.95) 28.69 (±20.19) 32.25 (±19.35) 24.49 (±22.07) 20.47 (±16.01) 22.11 (±15.79)
C4LM 34.39 (±34.83) 30.85 (±21.26) 30.78 (±17.47) 20.99 (±17.54) 20.78 (±14.58) 25.38 (±23.16)
O1LM 140.57 (±111.26) 137.20 (±95.46) 158.81 (±127.88) 44.91 (±57.47) 63.38 (±61.77) 70.65 (±77.38)
O2LM 147.27 (±128.18) 138.68 (±127.12) 165.17 (±134.02) 49.05 (±60.47) 71.57 (±86.89) 75.57 (±90.50)

Mean (standard deviation) frequency (Hz) and height (μV2/Hz) of alpha peak (7 – 12 Hz). Frequency of the peak declined in the eyes open and closed condition between weeks one and three in the left occipital derivation (O1LM). Peak height increased in the occipital derivation (O1LM and O2LM) across weeks in the eyes open condition.

Benz et al.

Benz et al. BMC Neuroscience 2013 14:117   doi:10.1186/1471-2202-14-117

Open Data