Table 4. Estimated linear mixed model coefficients (Coeff.) with their respective 95% confidence interval (CI-95) repre- senting the effect of change between baseline and tVNS, as well as tVNS and post-stimulation during electrical nerve stimulation. Additionally, each difference (Diff.) in coefficients (active minus sham) is shown including the respective CI-95; s.u. = baseline standardized unit.