Table 3.

Mean (SD) subjective ratings for the stimulation side effects (rated from 1 [not at all] to 7 [very much]) in the active and sham condition (including t test comparing both conditions)

	Sham	taVNS	t	Degrees of freedom	p
Headache	1.13 (0.34)	1.27 (0.73)	−1.22	36	0.23
Nausea	1.13 (0.42)	1.16 (0.55)	−0.25	36	0.8
Dizziness	1.16 (0.44)	1.3 (0.87)	−0.8	36	0.41
Neck pain	1.16 (0.5)	1.35 (0.82)	−1.31	36	0.19
Neck contraction	1.37 (0.55)	1.41 (0.68)	−0.27	36	0.78
Stinging sensation	2.27 (1.53)	2 (1.41)	0.76	36	0.45
Ear irritation	1.21 (0.62)	1.21 (0.58)	0	36	1
Concentration	1.70 (0.77)	1.89 (1.19)	−1.07	36	0.29
Fluctuation of feelings	1.43 (1.12)	1.57 (1.3)	−1.43	36	0.46
Unpleasant feelings	1.83 (1.07)	1.86 (1.25)	-0.12	36	0.91