TY - RPRT TI - Effect of intraoperative 40-hz gamma-frequency auditory stimulation on postoperative delirium in older adults undergoing major surgery: a randomized clinical trial protocol. AU - Qiyun Tan AU - Xiaoxuan Hu AU - Chong Fu AU - Weiming Zhao AU - Yichan Wang AU - Yaoyu Ying AU - Zhidong Zhang AU - Hong Liu AU - Lingzhong Meng AU - Juan Zhang AU - Huayue Liu AU - Fuhai Ji PY - 2026 DO - 10.1080/07853890.2026.2657098 UR - https://pubmed.ncbi.nlm.nih.gov/41956975/ ID - 41956975 ER -