Li Dong, Du Chunyun, Tang Xiaojun, Jin Yingxiong, Lei Ting, Yao Yang, Yang Zhuo, Zhang Tao. Changes of heart rate variability and impairment of learning and memory induced by cerebral ischemia/reperfusion in rats. Acta Physiol Sin 2007; 59 (1): 35-41 (in Chinese with English abstract).