比喻发生的心理机制

比喻是发话主体为了表达特定的思想情感，在具体的修辞实践中发生的言语现象，也是发话主体的大脑及其感觉器官在与客观世界相互作用的过程中，表现出来的一种特殊活动状态的功能特性。它和原始思维、儿童思维有一定的联系，具体表现为当外界不同事物的信息进入发话主体的感官并向大脑神经中枢传送时，因其具有某种可感觉的相似性，而发生在发话主体联想活动中的相异现象改辙换道以求同一的心理信息处理过程。因此，相似性和相异性是构成比喻缺一不可的要素。

The psychological mechanism of simile and metaphor

As speech products triggered by specific rhetorical practice to express specific thought and feelings, and a special dynamic forms of figurative speech whose psychological mechanism is closely related to that of primitive thinking and children's thinking in the fact that similarities between information of different objects are sensed, upon entering the addresser's brain and being transmitted to the nerve center for processing, and such sensed similarities are consequently employed to express associated thoughts and feelings. Similarities and differ-ences are thus essential factors of which similar and metaphor are made of .