Ear zaps may tweak heart rhythms, tiny study hints

This small pilot study is testing whether a gentle, non-invasive electrical stimulation on the ear (auricular vagus nerve stimulation) can change how the heart's electrical system works. Ten people who are already scheduled for a heart procedure will receive the stimulation while doctors measure various heart timing intervals. The goal is simply to learn more about how the vagus nerve affects the heart's electrical pathways, not to treat any condition.