中文摘要：

INTRODUCTION Ear surgeons are increasingly concerned about protecting the chorda tympani nerve while avoiding injury to the facial nerve during cochlear implant surgery.The chorda tympani nerve is the sensory branch of the facial nerve and carries taste information and general sensation (e.g.,pain and temperature) from the anterior two-thirds of the tongue.It supplies efferent vasodilator fibers to the tongue and secretomotor fibers to the salivary glands in the floor of the mouth and parotid gland.

英文摘要：

INTRODUCTION Ear surgeons are increasingly concerned about protecting the chorda tympani nerve while avoiding injury to the facial nerve during cochlear implant surgery.The chorda tympani nerve is the sensory branch of the facial nerve and carries taste information and general sensation （e.g.,pain and temperature） from the anterior two-thirds of the tongue.It supplies efferent vasodilator fibers to the tongue and secretomotor fibers to the salivary glands in the floor of the mouth and parotid gland.