Experimental group:transcutaneous auricular vagus nerve stimulation(Antihelix region)

The effect of transcutaneous auricular vagus nerve stimulation on postoperative gastrointestinal function in patients undergoing lumbar spinal fusion: A single-center, prospective, randomized, double-blind, controlled study

Safety and efficacy of transcutaneous vagus nerve electrical stimulation for promoting postoperative rehabilitation in patients undergoing weight loss surgery: A single-center, prospective, randomized controlled study