Pulsed taVNS-elicited pupil dilation: effects of intermixed stimulation, sham location and respiratory phase
This study demonstrates that while pulsed transcutaneous auricular vagus nerve stimulation (taVNS) can elicit pupil dilation in intermixed experimental designs, the effect's dependence on sham location and lack of respiratory phase modulation challenge the assumption that it is mediated by the vagal afferent pathway.