今日涨跌停股分析：68只涨停股、2只跌停股，人脑工程概念活跃，创新医疗涨停

Group 1 - A-shares experienced significant activity on August 5, with 68 stocks hitting the daily limit up and 2 stocks hitting the limit down [1] - The human brain engineering concept saw active trading, with Innovation Medical reaching the limit up [1] - The PEEK materials concept strengthened, leading to limit up performances for Zhongxin Fluorine Materials and Xinhan New Materials [1] Group 2 - *ST Yuancheng and Honghe Technology both hit the limit down [2]