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对215名病人和117名突聋病人进行ECoChG检查，分析两组的电生理变化以探讨二者的发病机理。检测指标包括总和电位（SP）／动作电位（AP）值、听力曲线及治疗后的听力变化。结果发现：①组病人和突聋组病人中分别有用％和76％的病人SP值大于正常平均值；若以ZSD（标准差）为标准
215 patients and 117 patients with sudden deafness ECoChG examination, analysis of electrophysiological changes in both groups to explore the pathogenesis of both. Test indicators include the sum of potential (SP) / action potential (AP) values, hearing curves and hearing changes after treatment. The results showed that: (1) the SP values of patients in group A and patients with sudden deafness were respectively higher than the normal average value in% and 76% of patients; if ZSD (standard deviation)