Tetramethylpyrazine Alleviates Behavioral and Psychological Symptoms of Dementia Through Facilitating Hippocampal Synaptic Plasticity in Rats With Chronic Cerebral Hypoperfusion oleh Zihu Tan, Zihu Tan, Jing Qiu, Jing Qiu, Yuting Zhang, Qiong Yang, Xixi Yin, Jia Li, Guangya Liu, Hengfei Li, Hengfei Li, Guang Yang, Guang Yang