Effects of Noninvasive Vagus Nerve Stimulation on Fatigue and Immune Response in Patients With Primary Sjogren’s Symdrome
Photo is a representation of what the device looks like. (No video, just photo.) This article does not include HRV as a biomarker, but I’m interested in immune function and acupuncture/TAVNS, so though I’d link to this. I also try
