Chemical lumbar sympathectomies were performed on coloproctitis hyperalgesia model and colon-rectum distension (CRD) was used as harm disturbing.

• 利用直、结肠慢性刺激性炎性致痛模型,切除模型大鼠的腰交感神经后,运用机械扩张刺激观察大鼠行为变化。