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神经外科手术中采用电生理监测技术可以帮助手术医师及时全面地判断麻醉状态下患者神经功能的完整性，提高手术操作者的术中决策力并最终降低手术致残率，其代替唤醒实验极为普遍。但此类监测并非没有风险，其中咬伤并发症发生率相对最高，可达0.63%。报道一例患者在运动诱发电位监测过程中发生舌咬伤，结合文献讨论其发生原因，旨在减少经颅电生理监测神经外科手术中此类并发症的发生。“,”Transcranial electrophysiological monitoring during neurosurgery can help surgeons timely and comprehensively judge the integrity of neurological function of patients under anesthesia, improve the decision-making power of surgical operators and ultimately reduce the rate of disability incidence during operation. Although arousal test is widely used, this kind of monitoring is not risk free. Actually, the tongue bite injury is the most possible complications. The incidence is up to 0.63%. In this paper, a case with tongue bite during motor evoked potential monitoring was reported. The causes were analyzed based on published literatures to reduce the incidence of complications in transcranial electrophysiological monitoring surgery.