the OD of SP and NOS of, Paraventricular nucleus (PVN) of hypothalamus, medullary bulb and vagi nerve complex, spinal lateral crus before and after treatment.

• 观察治疗前后下丘脑室旁核、延髓迷走神经复合区及脊髓外侧角SP、NOS灰度值的变化。