1 前言 我院使用外国产诱发电位仪已十几年。3种诱发电位如视觉诱发电位（VEP），脑干听觉诱发电位（BAEP），躯体感觉诱发电位（SEP）在检查中均需用2～3片一次性表面电极，每天十多名患者就须用20～30片一次性电极。原装进口价格昂贵，每片约2美元，换算成人民币日消耗约400 1 Foreword It has been more than ten years in our hospital to use foreign evoked potential meter. Three kinds of evoked potentials such as visual evoked potentials (VEP), brainstem auditory evoked potentials (BAEP), and somatosensory evoked potentials (SEP) all require 2 to 3 disposable surface electrodes for examination. Use 20 to 30 disposable electrodes. The original imported price is expensive, about 2 US dollars per tablet, converted to RMB daily consumption of about 400