一般认为机体的各组织、器宫均随增龄而有不同程度的器质性和功能性的衰退,其中中枢神经系统的变化在老年行为与其它功能变化中起着更为重要的作用。很多研究表明老年人和老龄动物的学 It is generally believed that the tissues and organs of the body all have varying degrees of organic and functional decline with age. Among them, changes in the central nervous system play a more and more important role in the changes of aging behavior and other functions. Many studies show the learning of older and older animals