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. 2022 Nov 21;10:e14447. doi: 10.7717/peerj.14447

Table 1. Mean and standard deviation of HRV parameters in the different experimental conditions.

HRV parameters Resting Active-taVNS Sham-taVNS F p
RMSSD 3.38 (0.49) 3.57 (0.56)ab 3.38 (0.51) 5.65 0.006
SDNN 3.66 (0.36) 3.80 (0.35)ab 3.67 (0.28) 5.25 0.008
LF 6.71 (0.64)ac 7.00 (0.55)a 6.99 (0.53)c 4.47 0.02
HF 5.94 (1.01)a 6.28 (0.93)ab 5.83 (0.89)b 5.52 0.007

Notes:

a

Resting vs. taVNS: p < 0.05.

b

Sham vs. taVNS: p < 0.05.

c

Sham vs. Resting: p < 0.05.

taVNS, transcutaneous auricular vagus nerve stimulation; SDNN, standard deviation of the RR intervals; RMSSD, root mean squared differences of successive RR intervals; LF, low frequency; HF, high frequencies.