Objectives: To explore the diagnostic value of the brainstem auditiry evoked potential(BAEP) in patients with(VBI) and compared with Transcranial dopper (TCD).

• 目的 :探讨脑干听觉诱发电位 (BAEP)对椎基底动脉供血不足 (VBI)诊断中的意义 ,并与多普勒超声波 (TCD)做对比。