Feature Closed-Loop Vagus Nerve Stimulator Comprising System Design of a a Wearable EEG Recorder and an Implantable Pulse Generator Xiaolong Li Member, IEEE, Ming Yu, Jin Zhu, Wei Zheng, Guojun Ma, Xiaoqiao Deng, Weijia Huang, and Wouter A. Serdijn Fellow, IEEE ©SHUTTERSTOCK.COM/TRENDSETTER Digital Object Identifier 10.1109/MCAS.2022.3189886 Date of current version: 5 September 2022 22 IEEE CIRCUITS AND SYSTEMS MAGAZINE 1531-636X/22©2022IEEE THIRD QUARTER 2022http://www.SHUTTERSTOCK.COM/TRENDSETTER