Sichuan Kangcheng Biotech Co., Inc. 1 article published in JoVE Neuroscience A Pilot Study on the Repetitive Transcranial Magnetic Stimulation of Aβ and Tau Levels in Rhesus Monkey Cerebrospinal Fluid Ling-Yi Liao1,2,3, Ying-Qian Zhang4, Benson Wui-Man Lau5, Qiong Wu6, Zi-Yan Fan1,3, Qiang Gao1,3, Zhi-Hui Zhong6,7 1Department of Rehabilitation Medicine, West China Hospital, Sichuan University, 2Department of Rehabilitation Medicine, Daping Hospital, Army Medical University, 3Key Laboratory of Rehabilitation Medicine in Sichuan Province, West China Hospital, Sichuan University, 4Department of physiology, Southwest Medical University, 5Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, 6Laboratory of Nonhuman Primate Disease Modeling Research, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, 7Sichuan Kangcheng Biotech Co., Inc. Here, we describe the procedure for a pilot study to explore the effect of repetitive transcranial magnetic stimulation with different frequencies (1 Hz/20 Hz/40 Hz) on Aβ and tau metabolism in rhesus monkey cerebrospinal fluid.