【摘要】 <正> 耳蜗电图(Electrocochleogram,EC-ochG)是耳蜗和听神经在声刺激条件下产生的电反应,包括耳蜗微音电位(CochlearMictophonics,CM),和电位(Summa-ting Potential,SP)与听神经复合动作电位(Action Potential,AP)。耳蜗电图更多还原

【Abstract】 Using tympanic membrane surface electrode,electric cochleargram (ECochG)recordings obtained from 40 ears in 20 normal subjects (10 male and 10 female) and42 patients were reported.Because the tympanic membrane need not be punctured inthis it can be accepted easily by the patients.The mean values of the latency,am-plitude of N1,N2 and N3 in 40 normal ears were measured and calculated.The APthresholds were compared with auditory threshold (clich and pure tone),the widthof AP with-SP/AP observed in the normal group.The 42 patients included those with Meniere’s disease,sudden hearing loss,rupt-ure of round membrane,acoustic neuroma and Scusori-Neural hearing loss of unknowncauses,etc.The features of ECochG in these diseases were discussed respectively.The AP threshold was always 10 to 15 dB lower than the threshold of wave V in Au-ditory Brain-Stems evoked response in our experiments.It is superior to evaluateacoustic neuroma by combining ECochG with ABR than by either ECochG or ABRalone.In our experience,recording from TM surface was as reliable as that fromtrartstympanic membrane.更多还原