Results of HRV parameters at rest and following right and left ABVN stimulation.

Results of HRV parameters at rest and following right and left ABVN stimulation (mean ± s.e.m.). HRV index, number of all RR-intervals / maximal frequency; ln(HF), power spectral analysis in the high frequency spectrum (0.15–0.5 Hz); ln(LF), power spectral analysis in the low frequency spectrum (0.05–0.15 Hz); ln(LF/HF), low frequency/high frequency ratio; ABVN, auricular branch of the vagus nerve; PD, patients with Parkinson’s disease; CTRL, healthy control subjects; r, right; l, left.Results of HRV parameters at rest and following right and left ABVN stimulation.