Effects of transcutaneous auricular vagus nerve stimulation at left cymba concha on experimental pain as assessed with the nociceptive withdrawal reflex, and correlation with parasympathetic activity
This is a fun study that looks at TAVNS and pain withdrawal as a function of parasympathetic activity. They used 100 Hz for 2 minutes only(!). They then measured cymba concha versus ear lobe. They looked at HRV during the