以往的痛模型大致有急性痛模型和慢性痛模型两类。前者缺乏动态过程,后者种类少,且不够稳定。有实验显示,急性痛和慢性痛的形成机理不同。要进一步弄清这一问题,有必要动态地观察疼痛发生发展过程中,中枢神经系统的功能状态。丘脑束旁核在感受痛觉过程中 Past pain models generally have acute pain models and chronic pain models. The former lack of dynamic process, which is less type, and not stable enough. Some experiments show that the formation mechanism of acute pain and chronic pain are different. To further clarify this issue, it is necessary to dynamically observe the development of pain occurs during the central nervous system functional status. Thalamic parafascicular nucleus in the process of feeling pain