Table 3 Resting-state EEG of the central region - relative power (%).

From: The effects of non-invasive transcutaneous auricular vagus nerve stimulation on resting-state delta oscillation: a randomized, double-blinded, sham-control trial

Band

Pre

Post

Sham (mean ± SD), n = 22

Active (mean ± SD), n = 22

p-value

Sham (mean ± SD), n = 22

Active (mean ± SD), n = 22

p-value

Delta

28.8 (13.2)

27.3 (13.4)

0.42

24.2 (12.5)

25.9 (12.3)

0.36

Theta

17.9 (7.2)

19.1 (7.2)

0.23

18.8 (6.5)

19.0 (6.7)

0.81

Alpha

36.2 (21.4)

38.9 (19.2)

0.36

40.5 (19.5)

39.2 (18.0)

0.63

Low alpha

15.4 (9.8)

14.0 (9.4)

0.34

17.0 (10.9)

17.1 (10.9)

0.94

High alpha

22.5 (14.7)

21.2 (15.0)

0.56

22.3 (13.0)

20.9 (11.4)

0.40

Beta

13.9 (19.1)

11.5 (14.2)

0.25

13.5 (15.0)

11.9 (12.7)

0.40

Low beta

13.2 (17.7)

11.0 (12.7)

0.27

12.9 (14.1)

11.1 (11.7)

0.31

High beta

0.7 (1.8)

0.5 (1.3)

0.22

0.5 (0.9)

0.7 (1.5)

0.40

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