Figure 1. Stimulation site for tVNS (Left) and sham
(Right) conditions.
The stimulation site was the left cymba concha (Fig. 1: Left) in the
tVNS condition and the left earlobe (Fig. 1: Right) in the Sham
condition. In the Sham condition, the electrode was fixed with tape as
necessary to ensure appropriate contact with the skin.